材料科学
合金
极限抗拉强度
钛合金
延展性(地球科学)
微观结构
复合材料
无扩散变换
硬化(计算)
变形(气象学)
钛
加工硬化
马氏体
冶金
蠕动
图层(电子)
作者
Yuankui Cao,Weidong Zhang,Bin Liu,Min Song,Yong Liu
标识
DOI:10.1080/21663831.2020.1745919
摘要
A heterogeneous (α + β) titanium alloy with extraordinary tensile properties was prepared. The heterogeneous microstructures, consisting of soft βfiber and hard (α + β)matrix, were achieved by controlling the distribution of β-stabilizing element. The heterogeneous alloy exhibits ultra-high strength of 1634 MPa with reasonable ductility, which is much higher compared to the homogeneous counterpart. The plastic incompatibility of the βfiber and (α + β)matrix produces hetero-deformation induced (HDI) hardening, which is the main reason for the enhanced strength. Moreover, the α-twining and martensitic transformation are responsible for the good ductility. This work provides a new strategy to achieve superior strength-ductility combination for multi-phase alloys.
科研通智能强力驱动
Strongly Powered by AbleSci AI