摘要
采用Gleeble 3500热模拟试验机和D/MAX-2500/PC型X射线衍射仪研究了亚稳态β相47Zr-45Ti-5Al-3V合金室温压缩变形过程中的应力诱发马氏体转变行为。结果表明,在压缩变形过程中,应力诱发马氏体的数量随应变速率和初始β相晶粒尺寸的降低而增加。随应变速率和初始β相晶粒尺寸的增加,应力诱发马氏体的触发应力逐渐增加,而抗压强度逐渐降低。加工硬化率随真应力的变化曲线可分为3个阶段,第2和第3阶段的加工硬化率随应变速率和初始β相晶粒尺寸的降低而增加。
The stress-induced martensite transformation in β solution treated 47Zr-45Ti-5Al-3V alloy was investigated using Gleeble 3500 thermomechanical simulator and D/MAX-2500/PC X-ray diffractometer. Results show that the amount of stress-induced martensite in compressive deformation increases with the decrease of strain rate and initial β grain size. The triggering stress increases with the increase of strain rate and initial β grain size, while the ultimate compressive strength decreases. The curve of work-hardening rate vs. true stress can be divided into three stages. The work-hardening rate at stage ΙΙ or ΙΙΙ increases with the decrease of strain rate and initial β grain size.
作者
谭元标
刘文昌
石维
向嵩
赵飞
梁益龙
Tan Yuanbiao;Liu Wenchang;Shi Wei;Xiang Song;Zhao Fei;Liang Yilong(Guizhou Key Laboratory of Materials Structure and Strength,Guizhou University,Guiyang 550025,China;Key Laboratory of Metastable Materials Science mad Technology,Yanshan University,Qinhuangdao 066004,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2018年第12期3789-3794,共6页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51361004)
贵州省百层次创新型人才(黔科合平台人才20164014
20165654)
