Influences of Solution Temperatures on Microstructure and Mechanical Properties of near α Titanium Alloy

Author:

Tan Chao1,Chen Zi Yong1,Xiang Zhi Lei1,Ma Xiao Zhao1,Yang Zi An1

Affiliation:

1. Beijing University of Technology

Abstract

A new type of Ti-Al-Sn-Zr-Mo-Si series high temperature titanium alloy was prepared by a water-cooled copper crucible vacuum induction melting method, and its phase transition point was determined by differential thermal analysis to be Tβ = 1017 °C. The influences of solution temperature on the microstructures and mechanical properties of the as-forged high temperature titanium alloy were studied. XRD results illustrated that the phase composition of the alloy after different heat treatments was mainly α phase and β phase. The microstructures showed that with the increase of the solution temperature, the content of the primary α phase gradually reduced, the β transformation structure increased by degrees, then, the number and size of secondary α phase increased obviously. The tensile results at room temperature (RT) illustrated that as the solution temperature increased, the strength of the alloy gradually increased, and the plasticity decreased slightly. The results of tensile test at 650 °C illustrated that the strength of the alloy enhanced with the increase of solution temperature, the plasticity decreased first and then increased, when the solution temperature increased to 1000 °C, the alloy had the best comprehensive mechanical properties, the tensile strength reached 714.01 MPa and the elongation was 8.48 %. Based on the room temperature and high temperature properties of the alloy, the best heat treatment process is finally determined as: 1000 °C/1 h/AC+650 °C/6 h/AC.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference15 articles.

1. X.H. Gong, Y. Wang, Y.M. Xia, P. Ge, Y.Q. Zhao, Experimental studies on the dynamic tensile behavior of Ti-6Al-2Sn-2Zr-3Mo-lCr-2Nb-Si alloy with Widmanstatten microstructure at elevated Temperatures, Mater. Sci. Eng A 523 (2009) 53-59.

2. Q.J. Wang, J.R. Liu, R. Yang, High Temperature Titanium Alloys Status and Perspective, Journal of Aeronautical Materials 34 (2014) 1-26.

3. C.Y. He, L.J. Zhang, The development and application of high temperature titanium alloy at domestic and abroad, World Nonferrous Metals 1 (2016) 21-25.

4. J.J. Hou, Q.Q. Gao, X.T. An, Latest Development of Domestic and International Research of High-temperature Titanium Alloy and Its Application, Hot Working Technology 10 (2014) 11-15.

5. Z.S. Zhu, Recent Research and Development of Titanium Alloys for Aviation Application in China, Journal of Aeronautical Materials, 34 (2014) 44-50.

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3