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  1. N K Acharya

    Forging of SS304L and grain boundary carbides

    Further during IGC test, the material passed, though there was orange peel appearance. The grain size is 2-3.The furnace TUS and SAT have been done and no worry there. Puzzling though. Thanks to all who have given their views and suggestions.
  2. N K Acharya

    Forging of SS304L and grain boundary carbides

    The forging is 110 mm thick and 730 mm dia. We gave one hr per inch soaking. We tried going up to 1175 Celsius. Carbon is below 0.03 and Nitrogen is below 0.01% We are using forged round bars.
  3. N K Acharya

    Forging of SS304L and grain boundary carbides

    We have ben forging SS 304L grade steel in the temperature range 1150 - 1000 C and water quenching. Further it is Solution annealed and water quenched (soaking at 1060 C - 1 hour per inch thickness). we are getting grain boundary carbides despite the solutionizing treatment. can anybody what...
  4. N K Acharya

    What could be the reason for using

    What could be the reason for using SAE 1141 grade steel in Railway engines - parts such as rocker arm and valve bridge? since it has an ideal diameter around 2 inches, is it possible to get martensitic structure at the core in a section 1 1/2 inch diameter and height 2 inches?
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