摘要
本文研究了低加入量Cr合金化与冷轧工艺对TiZrNb合金微观组织、显微硬度和高温性能的影响。在400℃,TiZrNbCr1.7合金较低拉伸速度延长了屈服阶段,提高了塑性,而高应变速率抑制塑性并促进脆性断裂;在600℃,TiZrNbCr合金的抗拉强度达到282 MPa,延伸率优于TiZrNb合金。研究表明:Cr元素的加入使合金发生晶格收缩,形成大量深大且分布均匀的韧窝,显著提升了高温韧性。
In this paper,the effects of low-addition Cr alloying and cold rolling processes on the microstructure,microhardness and high temperature properties of TiZrNb alloys were studied.At 400℃,the lower tensile velocity of TiZrNbCr1.7 alloy prolongs the yield phase and improves plasticity,while the high strain rate inhibits plasticity and promotes brittle fracture.At 600℃,the tensile strength of TiZrNbCr alloy reaches 282 MPa,which is better than that of TiZrNb alloy.The results show that the addition of Cr element causes the alloy to shrink the crystal lattice,forming a large number of deep and uniformly distributed frets,which significantly improves the toughness at high temperature.
作者
刘国强
安业龙
何建群
张峰
李爱国
任伟
徐铁成
白雅凯
张玉
LIU Guoqiang;AN Yelong;HE Jianqun;ZHANG Feng;LI Aiguo;REN Wei;XU Tiecheng;BAI Yakai;ZHANG Yu(Shandong Machinery Design Research Institute,Jinan 250031,Shandong China;Qilu University of Technology(Shandong Academy of Sciences),Jinan 250031,Shandong China;Shandong Laiyan Laser Technology Co.,Ltd.,Jinan 250101,Shandong China;Feicheng Liuyi Engineering Plastic Co.,Ltd.,Tai'an 271608,Shandong China;Dezhou Hongrui Geosynthetics Co.,Ltd.,Dezhou 253500,Shandong China;Shengxin Anti-corrosion Co.,Ltd.of Shengli Oilfield,Dongying 257091,Shandong China;Shandong Jiujia Fastener Co.,Ltd.,Jinan 271100,Shandong China)
出处
《中国铸造装备与技术》
2025年第5期55-58,共4页
China Foundry Machinery & Technology
基金
2024年济南海右人才项目
山东省科技型中小企业创新能力提升工程项目(2024TSGC0477,2024TSGC0955)
2024年度济南市科技计划“揭榜挂帅”项目(202428008)。
关键词
合金化
中熵合金
高温性能
Alloying
Medium-entropy alloy
High-temperature properties
作者简介
刘国强(1971-),男,应用研究员,硕士生导师,主要从事材料性能及成型工艺的研究开发。E-mail:liuguoqiang89@163.com。
