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English Translations » 【机械/加工制造】 » Discussion on microstructure

Discussion on microstructure

2019-12-17View Original

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The microstructure of 2.25Cr-1Mo is composed of over 90% bainite, and the hardness of this bainitic structure ranges from 40 to 50 HRC; whereas the hardness of 2.25Cr-1Mo forgings is only around 170 HB. Why is that?
Reply #22019-12-17
It may have been heat-treated. Tempering, annealing
Reply #32019-12-17
The hardness of bainite structure ranges from 40 to 50 HRC
Reply #42019-12-30
The hardness and physical-chemical properties of materials subjected to different heat treatments vary
Reply #52019-12-30
Forged parts are equivalent to normalized parts; they are primarily pearlitic in structure, and their hardness is lower than that of bainitic parts

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Translated at 2026-07-21 04:40:51

Original: https://bbs.hcbbs.com/thread-2872701-1-1.html

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