间隙元素O对 β 型Ti-15Mo合金超低温力学性能的影响

戴进财, 闵小华, 辛社伟, 刘凤金

Effect of Interstitial Element O on Cryogenic Mechanical Properties in β-Type Ti-15Mo Alloy

DAI Jincai, MIN Xiaohua, XIN Shewei, LIU Fengjin

图5 0.2O合金于20 K下拉伸后均匀变形区域和缩颈区域的变形组织

Fig.5 Deformation microstructures in a uniform plastic deformation region (a-d) and in a necking region (e-h) in 0.2O alloy deformed at 20 K (The perpendicular direction is parallel to the tensile direction, RD is rolling direction) (a, e) backscattered electron (BSE) images (b, f) high magnified BSE images of areas b and f in Figs.5a and e, respectively (c, g) inverse pole figures (IPFs) and locally high magnified IPFs (insets) (d, h) kernel average misorientation (KAM) maps (i, j) misorientation profiles along the lines of the insets in Figs.5c and g, respectively