TY - JOUR
T1 - Mechanical Properties of σ-Phase and Its Effect on the Mechanical Properties of Austenitic Stainless Steel
AU - Qiao, Peiheng
AU - Xie, Jinyang
AU - Jiang, Yong
AU - Tang, Pengjie
AU - Liang, Bin
AU - Lu, Yilan
AU - Gong, Jianming
N1 - Publisher Copyright:
© 2022 by the authors.
PY - 2022/12
Y1 - 2022/12
N2 - In this present paper, the mechanical properties of σ-phase and its effect on the mechanical properties of 304H austenitic stainless steel after servicing for about 8 years at 680–720 °C were studied by nano-indentation test, uniaxial tensile test, and impact test. The results showed that the nano-hardness (H), Young’s modulus (E), strain hardening exponent (n), and yield strength (σy) of σ-phase were 14.95 GPa, 263 GPa, 0.78, and 2.42 GPa, respectively. The presence of σ-phase increased the hardness, yield strength, and tensile strength, but greatly reduced the elongation and impact toughness of the material.
AB - In this present paper, the mechanical properties of σ-phase and its effect on the mechanical properties of 304H austenitic stainless steel after servicing for about 8 years at 680–720 °C were studied by nano-indentation test, uniaxial tensile test, and impact test. The results showed that the nano-hardness (H), Young’s modulus (E), strain hardening exponent (n), and yield strength (σy) of σ-phase were 14.95 GPa, 263 GPa, 0.78, and 2.42 GPa, respectively. The presence of σ-phase increased the hardness, yield strength, and tensile strength, but greatly reduced the elongation and impact toughness of the material.
KW - austenitic stainless steel
KW - mechanical properties
KW - nano-indentation
KW - σ-phase
UR - http://www.scopus.com/inward/record.url?scp=85144833470&partnerID=8YFLogxK
U2 - 10.3390/coatings12121917
DO - 10.3390/coatings12121917
M3 - 文章
AN - SCOPUS:85144833470
SN - 2079-6412
VL - 12
JO - Coatings
JF - Coatings
IS - 12
M1 - 1917
ER -