The effect of grain size on the shock-loading response of 304-type stainless steel
Abstract
The residual microstructure and mechanical response of shock-loaded stainless steel (AISI-304) of four different grain sizes—23, 55, 85 and 187 µm-was investigated. In addition to mechanical twinning and planar dislocation arrays, transformation to both ɛ and α martensite occurred in all shock-loaded specimens but became more extensive with decreasing grain size. In comparison to the Hall-Petch behavior of yield and early flow stress observed for the material after 5.2 pet cold rolling, the strengthening efficiency of shock loading decreased with increasing grain size. Shock loading enhanced the strain-induced transformation to α martensite during subsequent tensile deformation.
- Publication:
-
Metallurgical Transactions A
- Pub Date:
- December 1976
- DOI:
- 10.1007/BF02659827
- Bibcode:
- 1976MTA.....7.1943K