标题：Stress induced martensitic transformation in Ti-1023 alloys
作者：Chang, Lili ;Liu, Jiapeng
作者机构：[Chang, Lili ] School of Materials Science and Engineering, Shandong University, Jinan; 250061, China;[Liu, Jiapeng ] School of Materials Science and 更多
会议名称：Chinese Materials Conference on Special and High Performance Structural Materials, CMC 2015
会议日期：10 July 2015 through 14 July 2015
来源：Materials Science Forum
关键词：Mechanical properties; Stress induced martensite transformation; Titanium alloy
摘要：Mechanical behaviors of isothermal hot forged and solution treated Ti-1023 alloy with different initial microstructures were investigated. After heat treatment at 760℃ and 820℃ for 1 hour, Ti-1023 alloys mainly consisted of fine α particles and β phase with a large grain size. The CMWP (Convolution Multiple Whole Profile) analysis indicated that the dislocation density in Ti-1023 decreased with increasing heat treatment temperature. Ti-1023 alloy solution treated at 760℃ showed high strength and large anisotropy in plasticity. Improved ductility was observed in the alloy with solution treatment at 820℃. Increasing work hardening rate related to stress induced martensite transformation was observed in Stage Ⅱ of the work hardening rate curves. © 2016 Trans Tech Publications, Switzerland.