47Zr-45Ti-5Al-3V合金的应力诱发马氏体转变行为  

Stress-induced Martensite Transformation in 47Zr-45Ti-5Al-3V Alloy

作　　者：谭元标 刘文昌[2] 石维[1] 向嵩[1] 赵飞[1] 梁益龙[1] 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)

机构地区：[1]贵州大学贵州省材料结构与强度重点实验室,贵州贵阳550025 [2]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《稀有金属材料与工程》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)

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.

关 键 词：47Zr-45Ti-5Al-3V合金 热处理 力学性能 马氏体转变 

分 类 号：TG146.414[一般工业技术—材料科学与工程]