Effect of thermomechanical treatment on the structure and properties of 40KhNMA and 30KhGSA steels
HTTMT refines the grains and changes their shapes; the grain boundaries are more curved and longer.
The strengthening effect of HTTMT is stable up to high tempering temperatures (550°C for 30KhGSA steel) and is retained after multiple polymorphous transformations.
KeywordsThermomechanical Treatment Strengthening Effect Polymorphous Transformation 30KhGSA Steel
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