New Alloys for Automotive Turbines 560052

THIS paper reports on progress to date in the development of high-temperature alloys for automotive gas turbines.
Strict limitations have been set on the alloying elements in order to keep costs down — the cost factor being the main reason for this alloy search.
The materials discussed here, which meet the alloy limitations and the temperature and stress requirements, fall into three classes:
  1. 1.
    Iron-base chromium - manganese - nitrogen austenitic alloys.
  2. 2.
    Iron-aluminum ferritic alloys.
  3. 3.
    Cast ferritic alloys with up to 12% chromium and some titanium, vanadium, molybdenum, and tungsten.


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