TY - JOUR
T1 - Effect of Heat Treatment on the Microstructure and Micro-mechanical Behavior of Quenched Ti-6Al-4V Alloy
AU - Ma, Xinkai
AU - Li, Fuguo
AU - Li, Jinghui
AU - Cao, Jun
AU - Li, Pan
AU - Dong, Junzhe
N1 - Publisher Copyright:
© 2015, ASM International.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - To determine the influence of the solution treatment temperature and holding time on the microstructure and micro-mechanical behavior of Ti-6Al-4V alloys, micro-indentation experiments were conducted at maximum loads of 3000, 3500, 4500, 4600, 4700, 4800, and 4900 mN. A microstructure examination was also performed with an optical microscope. Based on the test data, the micro-hardness H, Young’s modulus E, yield strength σy, ultimate tensile strength σb, and strain-hardening exponent n were obtained by the Oliver-Pharr method. It was found that the solution treatment temperature and holding time had a significant influence on the morphology, size, and volume fraction of the α and β phases. The equiaxed microstructure (obtained at 950 °C) exhibits a higher H, E, and σb. In contrast, σy shows a downward trend over the entire range of solution treatment temperatures. The influences of holding time on H, E, σb, and σy were also significant.
AB - To determine the influence of the solution treatment temperature and holding time on the microstructure and micro-mechanical behavior of Ti-6Al-4V alloys, micro-indentation experiments were conducted at maximum loads of 3000, 3500, 4500, 4600, 4700, 4800, and 4900 mN. A microstructure examination was also performed with an optical microscope. Based on the test data, the micro-hardness H, Young’s modulus E, yield strength σy, ultimate tensile strength σb, and strain-hardening exponent n were obtained by the Oliver-Pharr method. It was found that the solution treatment temperature and holding time had a significant influence on the morphology, size, and volume fraction of the α and β phases. The equiaxed microstructure (obtained at 950 °C) exhibits a higher H, E, and σb. In contrast, σy shows a downward trend over the entire range of solution treatment temperatures. The influences of holding time on H, E, σb, and σy were also significant.
KW - micro-indentation test
KW - micro-mechanical properties
KW - microstructure
KW - Ti-6Al-4V
KW - α phase
UR - https://www.scopus.com/pages/publications/84942990783
U2 - 10.1007/s11665-015-1682-z
DO - 10.1007/s11665-015-1682-z
M3 - 文章
AN - SCOPUS:84942990783
SN - 1059-9495
VL - 24
SP - 3761
EP - 3772
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 10
ER -