The superplasticity and microstructure evolution of TC11 titanium alloy
The superplasticity and microstructure evolution of TC11 titanium alloy
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TC11钛合金的超塑性及显微组织演化
DOI:
10.1016/j.matdes.2011.02.062
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发表时间:
2011-08
期刊:
影响因子:
--
通讯作者:
Li, M. Q.
中科院分区:
文献类型:
--
作者:
Sun, Qian Jiang;Wang, G. C.;Li, M. Q.
The superplasticity is the capability of some metallic materials to exhibit very highly tensile elongation before failure. The superplastic tensile tests were carried out at various deformation conditions in this paper to investigate the superplastic behaviors and microstructure evolution of TC11 titanium alloy. The results indicate that the smaller the grain size, the better the superplasticity is, and the wider the superplastic temperature and strain rate is, in which the superplastic temperature is ranging from 1023 to 1223K and the strain rate is ranging from 4.4×10−5to 1.1×10−2s−1. The maximum tensile elongation is 1260% at the optimum deformation conditions (1173K and 2.2×10−4s−1). For further enhancing the superplasticity of TC11 titanium alloy, the novel tensile method of maximum m superplastic deformation is adopted in the paper. Compared with the conventional tensile methods, the excellent superplasticity of TC11 titanium alloy has been found with its maximum elongation of 2300%.
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