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2015-04-21
Event
This symposium provides a forum for researchers and application engineers to disseminate the knowledge and information gained in the area of advanced high-strength and press-hardening steel development and applications in automotive structures, enabling light-weight and durable vehicles with improved safety.
2015-04-20 ...
  • April 20-21, 2015 (8:30 a.m. - 4:30 p.m.) - Detroit, Michigan
  • October 29-30, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Attendees to the seminars held in conjunction with the SAE 2015 World Congress will receive COMPLETE access to Congress activities for only $55 per day. If interested, please contact our Customer Service department at +1.877.606.7323 (U.S. and Canada only) or +1.724.776.4970 (outside U.S. and Canada) to register for this special Congress daily rate. Preventing future problems and troubleshooting existing problems in today's stamping plants requires greater stamping process knowledge. The link between inputs and outputs isn't as clear as many think, increasing the need for detailed understanding of the variables involved.
2015-04-14
Technical Paper
2015-01-0554
Rafaa Esmaael, Vernon fernandez
An accurate prediction of elasto-plastic cyclic deformation becomes extremely important in design optimization. Which lead to a more accurate fatigue life prediction and weight savings. In this project a two-step notch root prediction method based on interpolation between linear and Neuber’s notch strain amplitude solutions is proposed. The accuracy of this method is assessed by comparing the results with the results obtained from elasto-plastic finite element analysis. Different types of steels with different yield strengths were used in this study. Notch deformation behavior under cyclic loading conditions was monitored for a double notched flat plate and a circumference notched round bar to cover plain stress and plain strain conditions. Elastic as well as elasto-plastic finite element analyses are performed.
2015-04-14
Technical Paper
2015-01-0557
Katherine Avery, Jwo Pan, Carlos Engler-Pinto
High silicon molybdenum (HiSiMo) nodular cast iron is a common material for high temperature engine components, such as exhaust manifolds, due to its good tensile strength and good resistance to creep and thermal fatigue. Automotive exhaust manifolds may see maximum temperatures of around 800°C, as well as severe thermal cycles during vehicle operation. In order to understand the performance of HiSiMo cast iron in the exhaust manifold application, it is necessary to characterize the thermomechanical fatigue (TMF) life and failure behavior at temperatures representative of those experienced during vehicle operation. In this paper, the effect of the minimum temperature and maximum temperature on the TMF life of a HiSiMo cast iron is investigated. Tensile data at different temperatures are also presented. The data show that decreasing the minimum temperature (or increasing the temperature range) has a detrimental effect on the TMF life for this material.
2015-04-14
Technical Paper
2015-01-0705
Koichi Taniguchi, Hiroshi Matsuda, Rinsei Ikeda
High joint strength of resistance spot welds is necessary for high rigidity and reliability of car body using ultra high strength steel (UHSS) sheets with tensile strength over 980MPa. We developed “pulsed current pattern” consisting the combination of short cool time and short-time high-current post-heating. This new process can achieve high cross tension strength (CTS) with sufficient tensile shear strength (TSS) in shorter welding time than conventional temper pattern. This paper presents the heating pattern and the effect on the joint strength by pulsed current pattern. Finite element analysis (FEA) for post-heating patterns was conducted using SORPAS. Temperature dependent material properties of 1180MPa grade steel were taken into account. FEA shows that the short-time high-current post-heating leads to rapid heating in nugget and heat affected zone (HAZ) compared to conventional temper pattern consisting long-time low-current post-heating.
2015-04-14
Technical Paper
2015-01-0459
Vesna Savic, Louis Hector, Hesham Ezzat, Anil Sachdev, James Quinn, Ronald Krupitzer, Xin Sun
This paper presents an overview of a four-year project on integrated computational materials engineering (ICME) for third generation advanced high-strength steels (3GAHSS) development. Following a brief look at ICME as an emerging discipline within the Materials Genome Initiative, technical tasks in the ICME project will be discussed. Specific focus of the individual tasks is on multi-scale, microstructure-based material model development using state-of-the-art computational and experimental techniques, forming, assembly, design optimization, integration and technical cost modeling. The integrated approach is illustrated using a 980 grade transformation induced plasticity (TRIP) steel with a two-step quenching and partitioning (Q&P) heat treatment as an example.
2015-04-14
Technical Paper
2015-01-0552
Xiaoyang Liu, Guangchun Quan, Xijia Wu, Zhong zhang, Clayton Sloss
In this paper, both free TMF tests of DCI with various conditions of out-of-phase, in-phase strain control and temperature range from 300 to 800C, and constrained TMF tests with various constrain ratio of 100%, 70%, and 60% in the temperature from 160 to 600C were conducted. Based on material properties in which plastic and creep model are from low-cycle fatigue data, finite element method (FEM) analysis of above TMF tests were analysed with Abaqus. Lifetime model covering four major damage mechanisms: plasticity-induced fatigue, inter-granular embrittlement, creep and oxidation for this alloy was integrated into Abaqus C++ API code to post-process Abaqus output database. Simulation results have shown the good agreement with experiments in the stress-strain responses and lifetime under various TMF conditions (OP and IP, temperature range, and constrained).
2015-04-14
Technical Paper
2015-01-0605
Guoyu Yang, Scott Kish
Abstract Heavy stamping parts of HSLA (high strength low alloy) steel are widely used in the automotive industry for design optimization. The material properties of the heavy stamping parts however, change during the stamping process, making simulation and analysis difficult. Traditional tensile tests, used to obtain the material properties, might not be applicable due to the size of specimens required. Without reliable material properties, it is very hard for FEA simulations to predict accurate results. A method for characterizing the material properties of a heavy stamped steel part was presented in this paper. Based on monotonic and fatigue test results, gathered in cooperation with The University of Toledo, we developed specific material models for strength and fatigue analysis. Instead of employing commercial fatigue analysis software, we can perform the fatigue life prediction by using traditional static analysis in ABAQUS with more accurate results.
2015-04-14
Technical Paper
2015-01-1102
Katsuhiko Ohishi, Toshihiro Uehara, Ichirou Kishigami
In recent years, fuel economy improvement of automobiles is required to reduce emissions of carbon dioxide (CO2) which is a greenhouse gas and is well known as one of the factors of global warming. Therefore, continuously variable transmissions (CVT) have been used increasingly, because they are light, compact and contribute to better fuel consumption. Metal belt CVTs are the most popular system in use today. 18mass%Ni maraging steel is used for CVT belts because it has good weldability, good formability and high fatigue strength. Maraging steels strengthened by Ti have high fatigue strength, but TiN particles, which are the main non-metalic inclusions inside steels, might cause fatigue cracks in high cycle regions over 107 cycles. At present there is a special melting process to minimize TiN particle size, but we need further technological innovations to improve fatigue strength.
2015-04-14
Technical Paper
2015-01-0683
Jiman Han, Qian Zou, Gary Barber, Xichen Sun
This paper describes the scuffing tests performed to understand the effect of surface roughness and lubrication on scuffing behavior for austempered ductile iron (ADI) material. As the scuffing tendency is increased, metal-to-metal interaction between contacting surfaces is increased. Lubrication between sliding surfaces becomes the boundary or mixed lubrication condition. Oil film breakdown leads to scuffing failure with the critical load. Hence, the role of surface roughness and lubrication becomes prominent in scuffing study. There are some studies in which the influence of the surface roughness and lubrication on scuffing was evaluated. However, no comprehensive scuffing study has been found in the literature regarding the effect of surface roughness and lubrication on scuffing behavior of ADI material. The current research took into account the inferences of surface roughness and lubrication on scuffing for ADI.
2015-03-19 ...
  • March 19-20, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • September 14-15, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Advanced High Strength Steels (AHSS) are now commonly used in automotive body structural applications. The high strength of this grade classification is attractive to help reduce mass in the automotive body through reduction in thickness. Strength also supports improvements in safety requirements so that mass increases are minimized. In some specific grades of AHSS, energy absorption is possible in addition to the high strength. This course will review the definition and properties of AHSS and cover several common applications in automotive body structures.
2015-01-26
WIP Standard
AMS5629/H1000A
This specification covers a corrosion-resistant steel in the form of bars, wire, forgings, flash welded rings, and extrusions in the solution and precipitation heat treated (H1000) condition. These products have been used typically for parts requiring corrosion resistance, stress-corrosion resistance, high strength up to 600 °F (316 °C), and good ductility and strength in the transverse direction in large section sizes, but usage is not limited to such applications.
2015-01-24
WIP Standard
AMSQQS763D
This specification covers corrosion-resistant steel bars, wire, shapes, and forgings.
2015-01-23
Standard
J411_201501
This SAE Information Report describes the processing and fabrication of carbon and alloy steels. The basic steelmaking process including iron ore reduction, the uses of fluxes, and the various melting furnaces are briefly described. The various types of steels: killed, rimmed, semikilled, and capped are described in terms of their melting and microstructural differences and their end product use. This document also provides a list of the commonly specified elements used to alloy elemental iron into steel. Each element’s structural benefits and effects are also included. A list of the AISI Steel Products Manuals is included and describes the various finished shapes in which steel is produced.
2015-01-22
Standard
AS1371A
This standard covers all-metal, self-locking, prevailing torque nuts made of corrosion resistant steel.
2015-01-19
WIP Standard
AS3214A
No scope available.
2015-01-17
WIP Standard
AMS5045J
This specification covers a carbon steel in the form of sheet and strip.
2015-01-15
Standard
AMS5622/H1025
This specification covers a corrosion-resistant steel product in the solution and precipitation heat treated (H1025) condition.
2015-01-15
Standard
AMS5660L
This specification covers a corrosion and heat-resistant nickel-iron alloy in the form of bars and forgings 5 inches (127 mm) and under, and forging stock of any size.
2015-01-14
Technical Paper
2015-26-0068
Muthuraj Ramasamy, Vignesh E, Sundararajan Thiyagarajan
Abstract A “WHEEL” is one of those auto component in a vehicle which necessitates equal attention from safety, ergonomics and aesthetic perspectives. A conventional tube type wheel for commercial vehicles is made of steel with steel side rings (multi-piece construction). In course as headway in wheel design the single piece wheels were developed which used the tubeless tires. These wheels were made available in both steel and aluminum versions. Wherein the aluminum wheels were lighter in weight than steel, aesthetically more appealing and had other significant advantages. Despite the advantages of these tubeless tire wheels, the end user had to invest for both wheels and tubeless tires to replace conventional tube type steel wheels. The retro-fitment calls for higher exchange cost of wheel and tire and this process stands to be more capitalistic to the end user wherein the payback period was longer.
2015-01-14
Technical Paper
2015-26-0066
Aravind Vadiraj, Shashank Tiwari, Ashutosh Dasare
Abstract Mechanical and wear properties of Al alloyed gray cast iron (0.5% and 1.0%) were compared with that of Mo (1.0%) and Cu (0.77%) alloyed gray cast iron in this investigation. All the alloys showed pearlitic microstructure. The graphite morphology varied due to varying chemistry. The fracture surface showed “cabbage” like dimpled morphology indicating the predominant ductile fracture. It was found that the Mo containing cast iron show 25 to 30% higher strength and 6 to 7 times better wear resistance compared to Al containing cast irons. The worn surface showed oxide formation during sliding.
2015-01-14
Technical Paper
2015-26-0205
N. Prabhakar, Suresh Gayakwad J, P. Lingeswaramurthy, P.S. Lakshman
Abstract The present investigation deals with the design and shape optimization of the steel insert used in the hand brake valve to withstand the impact load during brake off condition. This hand brake valve is used in the vehicles for parking brake application. It consists of a steel insert with a helical coil spring for locking and unlocking of a lever during brake on and off condition. Also a torsion spring with a cam mechanism is used for opening and closing of a hand brake valve. When the lever is locked the flexible elastic object (torsion spring) stores the mechanical energy when it is twisted. When it is unlocked (braking off) it exerts a force (actually torque) in the opposite direction, proportional to the angle it is twisted. During the braking off condition the steel insert gains the angular velocity from the stored mechanical energy of the torsion spring.
2015-01-09
WIP Standard
AMS5629G
This specification covers a corrosion-resistant steel in the form of bars, wire, forgings, flash welded rings, extrusions, and stock for forging, flash welded rings, or extrusion.
2014-12-23
Standard
AMS5035C
This specification covers a loy-alloy steel in the form of welding wire.
2014-12-23
Standard
AMS5643/H1025A
This specification covers a corrosion-resistant steel product in the solution and precipitation heat treated (H1025) condition.
2014-12-23
Standard
AMS5010L
This specification covers a free-machining carbon steel in the form of bars.
2014-12-11
Standard
AMS5629/H1000
This specification covers a corrosion-resistant steel in the form of bars, wire, forgings, flash welded rings, and extrusions in the solution and precipitation heat treated (H1000) condition. These products have been used typically for parts requiring corrosion resistance, stress-corrosion resistance, high strength up to 600 °F (316 °C), and good ductility and strength in the transverse direction in large section sizes, but usage is not limited to such applications.
2014-12-08
Standard
MA1565C
This SAE Metric Aerospace Standard defines the requirements for corrosion resistant steel helical coil metric series screw thread inserts made from formed wire, the inner surfaces of which, after assembly, provide internal threads of the diameter and pitch specified on the drawing.
Viewing 1 to 30 of 7130

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