X-Ray Determination of Residual Stresses and Hardness in Steel Due to Thermal, Mechanical, and Fatigue Deformations 620053
Residual stress and hardness in steel due to thermal, mechanical, and fatigue deformations are determined by an X-ray diffraction method. The sharp temperature rise associated with electrical discharge machining causes austenitizing, rehardening, and tempering, and results in high tensile residual stress. Shot-peening quality is evaluated from residual stress and hardness induced by the peening. Rolling contact fatigue of carburized and hardened bearings causes a transformation of austenite to martensite, and thereby generates more residual compression, and also causes permanent fatigue softening. Less softening is observed in inner races of consutrode and cross-forged steels than in air-melted steel, and the former steels exhibit greater fatigue life at early and mean failure levels.
Citation: Roberts, J., "X-Ray Determination of Residual Stresses and Hardness in Steel Due to Thermal, Mechanical, and Fatigue Deformations," SAE Technical Paper 620053, 1962, https://doi.org/10.4271/620053. Download Citation
Author(s):
J. G. Roberts
Pages: 15
Event:
Pre-1964 SAE Technical Papers
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Steel
Fatigue
Tensile strength
Peening
Hardening
Bearings
Roll
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