TY - JOUR
T1 - Microstructure and properties of a novel titanium alloy Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si manufactured by laser additive manufacturing
AU - Li, Guo Chao
AU - Li, Jia
AU - Tian, Xiang Jun
AU - Cheng, Xu
AU - He, Bei
AU - Wang, Hua Ming
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/1/27
Y1 - 2017/1/27
N2 - A novel α+β titanium alloy with multi-alloying addition and low-cost is designed from Ti-6Al-4V. In order to maintain the same [Al]eq and [Mo]eq, the Mo and Zr were added into the alloy instead of V, and the nominal composition of this novel alloy is determined as Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si with a spot of Si added. In this study, a plate of the novel alloy was manufactured by laser additive manufacturing (LAM). The macrostructure, microstructure, compositions, microhardness and room temperature tensile properties of as-deposited alloy were investigated. The results show that the macrostructure of the novel alloy contains large columnar grains and small columnar grains. Compared to the reference alloy Ti-6Al-4V manufactured with the same process, the novel alloy had much finer basket-weave microstructure. This novel alloy, solid-solute with alloying elements Mo, Zr and Si, has higher microhardness and better combination of strength and plasticity compared to Ti-6Al-4V.
AB - A novel α+β titanium alloy with multi-alloying addition and low-cost is designed from Ti-6Al-4V. In order to maintain the same [Al]eq and [Mo]eq, the Mo and Zr were added into the alloy instead of V, and the nominal composition of this novel alloy is determined as Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si with a spot of Si added. In this study, a plate of the novel alloy was manufactured by laser additive manufacturing (LAM). The macrostructure, microstructure, compositions, microhardness and room temperature tensile properties of as-deposited alloy were investigated. The results show that the macrostructure of the novel alloy contains large columnar grains and small columnar grains. Compared to the reference alloy Ti-6Al-4V manufactured with the same process, the novel alloy had much finer basket-weave microstructure. This novel alloy, solid-solute with alloying elements Mo, Zr and Si, has higher microhardness and better combination of strength and plasticity compared to Ti-6Al-4V.
KW - Laser additive manufacturing
KW - Macrostructure
KW - Microstructure
KW - Novel titanium alloy
KW - Room temperature tensile properties
UR - https://www.scopus.com/pages/publications/85006746586
U2 - 10.1016/j.msea.2016.11.084
DO - 10.1016/j.msea.2016.11.084
M3 - 文章
AN - SCOPUS:85006746586
SN - 0921-5093
VL - 684
SP - 233
EP - 238
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
ER -