TY - JOUR
T1 - Temperature-Dependent Deformation Behavior of 316 Stainless Steel with Heterogeneous Microstructure
AU - Wan, Jiahe
AU - Fu, Bin
AU - Guo, Yanhui
AU - Pang, Linghuan
AU - Li, Xiaolin
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024
Y1 - 2024
N2 - Systematic investigations are conducted to elucidate the temperature-dependent mechanical properties and deformation behavior of a heterogeneous structured 316 stainless steel, which features a combination of deformed and reversed/recrystallized grains. It is found that the yield strength of the heterogeneous structured specimen is significantly higher at cryogenic temperature compared to room temperature, whereas the yield strength of the uniformly structured specimen remains largely unchanged. This difference is primarily attributed to the strengthening contribution from dislocations and heterogeneous deformation-induced strengthening in the heterogeneous structured specimen. Additionally, the heterogeneous structured specimen exhibits an impressive elongation of 65.45%, markedly higher than that observed at room temperature. At room temperature, deformation is predominantly driven by dislocation activity. In contrast, under cryogenic condition, the initial stage of deformation is characterized by the plateau due to the transformation-induced plasticity (TRIP) effect. This is followed by the development of localized shear bands, which induce further TRIP effect. These findings suggest that heterogeneous structured 316 stainless steel is well-suited for applications requiring both high strength and toughness in low-temperature environment.
AB - Systematic investigations are conducted to elucidate the temperature-dependent mechanical properties and deformation behavior of a heterogeneous structured 316 stainless steel, which features a combination of deformed and reversed/recrystallized grains. It is found that the yield strength of the heterogeneous structured specimen is significantly higher at cryogenic temperature compared to room temperature, whereas the yield strength of the uniformly structured specimen remains largely unchanged. This difference is primarily attributed to the strengthening contribution from dislocations and heterogeneous deformation-induced strengthening in the heterogeneous structured specimen. Additionally, the heterogeneous structured specimen exhibits an impressive elongation of 65.45%, markedly higher than that observed at room temperature. At room temperature, deformation is predominantly driven by dislocation activity. In contrast, under cryogenic condition, the initial stage of deformation is characterized by the plateau due to the transformation-induced plasticity (TRIP) effect. This is followed by the development of localized shear bands, which induce further TRIP effect. These findings suggest that heterogeneous structured 316 stainless steel is well-suited for applications requiring both high strength and toughness in low-temperature environment.
KW - 316 stainless steel
KW - cryogenic temperature
KW - heterogeneous deformation-induced strengthening
KW - heterogeneous structure
KW - transformation-induced plasticity
UR - http://www.scopus.com/inward/record.url?scp=85213444525&partnerID=8YFLogxK
U2 - 10.1002/srin.202400790
DO - 10.1002/srin.202400790
M3 - 文章
AN - SCOPUS:85213444525
SN - 1611-3683
JO - Steel Research International
JF - Steel Research International
ER -