Transactions of Materials and Heat Treatment

Title：Influence of forging temperature and Zr percentage on thermal mechanical properties of titanium alloy TA15

Authors： Shan Shan Wang Dacheng Zang Dechang

Unit： Shenyang Liming Aero-Engine Group Co. Ltd.

KeyWords： titanium alloy TA15 forging temperature Zr percentage thermal mechanical properties

ClassificationCode：TG314.3

year,vol(issue):pagenumber：2015,40(11):137-140

Abstract：

The influences of forging temperature and heat treatment temperature of α+β region as well as Zr percentage on thermal mechanical properties of titanium alloy TA15 were investigated. Research results show that when the forging temperature is lower, the proportion of primary α phase content in alloy TA15 bar is higher, and the work-hardening phenomena is obvious. Therefore, TA15 bar shows a higher thermal tensile strength due to existing work-hardening after ordinary annealed heat treatment. However, the work-hardening disappears gradually during solution heat treatment process of the α+β region, and the different percentage of Zr element results in the difference of thermal mechanical properties in TA15 bar. Further, a higher percentage of Zr element can increase its thermal tensile strength, and enhance its long-lasting and creep properties.

Funds：

单善（1981-），男，学士，高级工程师

Reference：

［1］张旺峰，曹春晓，李兴无，等. β区热处理对TA15钛合金力学性能的影响规律[J]. 稀有金属材料与工程，2004,33 (7):768-770.Zhang W F, Cao C X, Li X W, et al. Effect of β heat treatment on mechanical properties of TA15 titanium alloy [J].Rare Metal Material and Engineering, 2004,33(7):768-770.
［2］朱景川，何东，杨夏炜，等. TAl5钛合金双重热处理工艺及其微观组织演化的EBSD研究[J].稀有金属材料与工程，2013,42 (2):382-386.Zhu J C, He D, Yang X W, et al. EBSD study on dual heat treatment and microstructure evolution of TA15 titanium alloy[J].Rare Metal Material and Engineering, 2013,42(2):382-386.
［3］安耀辉，高博，马龙，等. 超大规格TA15钛合金棒材锻造工艺研究[J].钛工业进展，2013, (5)：22-25.An Y H, Gao B, Ma L, et al. Research on forging process of super large-sized TA15 titanium alloy bars [J]. Titanium Industry Progress, 2013,(5):22-25.
［4］王鹤仪. 锻造温度与变形量对TC18钛合金棒材力学性能的影响[A].2012年钛及钛合金开发应用新技术交流会论文集[C]. 攀枝花，2012.Wang H Y. The effect of forging temperature and strain for the mechanical properties of TC18 titanium alloy bars [A].In 2012, Titanium and Titanium Alloy Development and Application of New Technology Exchange Meeting[C]. Panzhihua，2012.
［5］Bolisowa E A. 钛合金金相学[M].陈石卿,译. 北京：国防工业出版社, 1986.Bolisowa E A. Metallography of Titanium alloy [M]. Translated by Chen S Q. Beijing: National Defence Industry Press, 1986.

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