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TiNbTaZr钛合金的组织演变及弹性行为
发布人：上海艾荔艾金属材料有限公司www.shailiai.com
更新时间：2015-08-27
研究Ti35Nb2Ta3Zr0.3O合金在冷变形过程的组织结构及弹性行为。
TiNbTaZr钛合金的组织演变及弹性行为Microstructure evolution and elastic behaviors of TiNbTaZr
titanium alloy
研究Ti35Nb2Ta3Zr0.3O合金在冷变形过程的组织结构及弹性行为。结果表明：随着冷变形的进行，合金的显微组织交织更加剧烈，并出现与旋锻轴向平行的á110？丝织构，使该方向的弹性模量下降；冷变形合金无应力诱发α"马氏体产生，β相具有较强的稳定性，无伪弹性变形特征；随冷变形量的增加，合金衍射峰变宽，亚晶数量增多，缺陷密度增大，也致使弹性模量下降；强冷变形合金在拉伸过程不断产生孪晶，缺陷密度持续增大，导致合金的非线弹性特征。
The microstructure and elastic behaviors of
Ti35Nb2Ta3Zr0.3O alloy during cold working were investigated. The results show
that the microstructure is highly distorted, and the á110？ texture along the
swaging axis is produced with the cold working, which results in the decrease in
the elastic modulus along the direction. Stress-induced α"-phase is not
observed, β phase is of strong stability in cold worked alloy, and no
pseudo-elastic deformation occurs. With the increase of cold deformation rate,
the diffraction peak broadens, the number of subgrains increases, the defect
density increases accordingly, and the elastic modulus decreases. Twins are
generated constantly, and defect density increases in severely worked alloy
during the tensile test, which results in non-linear elasticity characteristics
of the alloy.