Microstructure and properties of cross-roll rolled and heat treated metastable TiNbSn alloy.
A (Ti-35mass%Nb)-4mass%Sn alloy was cross-roll rolled with a reduction ratio of 70% in which the roll axes are tilted by ± 5 degrees away from the transverse direction of the rolled sample and then aged at 250 degrees C for 2 h. Cross-roll rolling was found to increase yield strength and Young's modulus, simultaneously. Yield strength was higher in cross-roll rolled than in conventionally rolled at same reduction ratio. Yield and tensile strength further increased by a low temperature ageing by ψ precipitation hardening and microstructure refinement. Yield and tensile strength of the aged 70% cross-roll rolled sample were higher than those of the aged 70% conventionally rolled one.
Taek-Kyun
TK
Jung
Ho-Joon
HJ
Choi
Kyung-Taek
KT
Kim
Young-Chul
YC
Shin
Hyo-Soo
HS
Lee
Sung-Chul
SC
Lim
Hyouk-Chon
HC
Kwon
Shuji
S
Hanada