Transactions of Materials and Heat Treatment

Title：Regulation of heat treatment on microstructure and properties of forged TA15 titanium alloy bar

Authors： Qi Ming An Zhen Zhang Kai Meng Guanghui Ding Xu

Unit： Xi′an Aeronautical University

KeyWords： heat treatment forged TA15 titanium alloy microstructures tensile properties phase transformation

ClassificationCode：TG156.21

year,vol(issue):pagenumber：2022,47(8):193-199

Abstract：

The samples of forged TA15 titanium alloy were annealed at 700-820 ℃ and holding for 2 h and then air-cooled, and the influences of heat treatment process on the mechanical properties of forged TA15 titanium alloy were studied. Then, the microstructure changes of forged TA15 titanium alloy after heat treatment were observed, and the relative volume fraction of primary α phase was calculated. The results show that after annealing at 700-820 ℃, there are mainly primary α phase and secondary α phase, and a few matrix β phases in the microstructure of forged TA15 titanium alloy. With the increasing of annealing temperature, the content of primary α phase decreases gradually, the relative volume fraction decreases from 70.35% to 46.42%, and the relative volume fraction of secondary α phase increases from 3.84% to 18.26%. Comparing the tensile properties of the samples at room temperature and high temperature (500 ℃) under different heat treatment temperatures, the samples after annealing at 820 ℃ have the tensile strength of 986 MPa and the elongation rate of 13.5% at room temperature, and the strength and plasticity have good performance match.

Funds：

西安市科技计划项目(2019217314GXRC009CG010-GXYD9.3);2019年教育部第二批产学合作协同育人项目(201902004015)；国家级大学生创新创业训练项目(S202011736024)

作者简介：齐铭（1983-）,男，博士，讲师，E-mail：93771617@qq.com；通信作者:安震(1985-),男,博士,副教授，E-mail：347213010@qq.com

Reference：

[1]陈国琳，吴鹏炜，王自东. 钛合金的发展现状及应用前景[J].舰船科学技术，2009，31(12)：110-113.

Chen G L，Wu P W，Wang Z D. The development prospect and current status of titanium alloys[J]. Ship Science and Technology，2009，31(12)：110-113.

[2]Qian G L，Song X Y，Ye W J，et al. Effects of ultrasonic impact treatment on the residual stress and microstructure of TA15 welded joint[J]. Materials Science Forum，2017，898(13)：1056-1062.

[3]隋楠，曹京霞，黄旭，等. 合金成分对TA15钛合金组织及力学性能的影响[J]. 航空材料学报，2019，39(1)：48-54.

Sui N，Cao J X，Huang X，et al. Effect of composition on microstructure and mechanical properties of TA15 titanium alloy[J]. Journal of Aeronautical Materials，2019，39(1)：48-54.

[4]史莹莹，刘钊，陈峰，等. Φ1040 mm规格TA15钛合金铸锭生产工艺研究[J]. 世界有色金属，2018，16(23)：9-12.

Shi Y Y，Liu Z，Chen F，et al. Preparation technology research of Φ1040 mm TA15 titanium alloy ingot[J]. World Nonferrous Metals，2018，16(23)：9-12.

[5]梁培新，朱卫东，杨刚，等. 渗氢工艺对 TA15 钛合金氢含量和显微组织的影响[J]. 锻压技术， 2020， 45(8)：190-194.

Liang P X，Zhu W D，Yang G，et al. Influence of hydrogen permeation process on hydrogen content and microstructure of TA15 titanium alloy[J]. Forging ＆ Stamping Technology，2020，45（8）：190-194.

[6]侯艳荣，赖运金，杜予晅，等. 热处理对TA15钛合金棒材冲击性能的影响[J]. 热加工工艺，2011，40(2)：182-183.

Hou Y R，Lai Y J，Du Y X，et al. Effect of heat treatment process on impact property of TA15 alloy[J]. Hot Working Technology，2011，40(2)：182-183.

[7]卢凯凯，周立鹏，段启辉，等. 热处理工艺对TA15钛合金棒材组织和性能的影响[J]. 钛工业进展，2018，35(4)：35-39.

Lu K K，Zhou L P，Duan Q H，et al. Effect of heat treatment procss on microstructure and mechanical properties of TA15 titanium alloy bars[J]. Titanium Industry Progress，2018，35(4)：35-39.

[8]卢凯凯，周立鹏，李敏娜，等. 强韧化热处理对 TA15 钛合金组织和性能的影响[J]. 材料热处理学报，2020，41(1)：44-49.

Lu K K，Zhou L P，Li M N，et al. Effect of strengthening and toughening heat treatment on microstructure and mechanical properties of TA15 titanium alloy[J]. Transactions of Materials and Heat Treatment，2020，41(1)：44-49.

[9]刘航，李伟，张镜斌. TA15 钛合金双重热处理三态组织中的片层α尺寸研究[J]. 热加工工艺，2021，50(14)：142-145，149.

Liu H，Li W， Zhang J B. Study on size of lamellar α in tri-modal microstructure of TA15 Ti-alloy during dual heat treatment[J]. Hot Working Technology，2021，50(14)：142-145，149.

[10]檀雯，都海刚，杨军，等. TA15 钛合金厚板热轧变形规律研究[J]. 有色金属材料与工程，2020，41(4)：17-23.

Tan W， Du H G，Yang J，et al. Study on deformation mechanisms of TA15 titanium alloy plate during hot rolling[J]. Nonferrous Metal Materials and Engineering，2020，41(4)：17-23.

[11]纪小虎，李萍，时迎宾，等. TA15 钛合金等温多向锻造晶粒细化机理与力学性能[J]. 中国有色金属学报，2019，29(11)：2515-2523.

Ji X H， Li P，Shi Y B，et al. Grain refinement mechanism and mechanical properties of TA15 alloy during multi-directional isothermal forging[J]. The Chinese Journal of Nonferrous Metals，2019，29(11)：2515-2523.

[12]李建伟，刘浏，邹宗树. 不同等温锻TA15钛合金试验件的组织与力学性能研究[J]. 热加工工艺，2019，48(1)：151-157.

Li J W，Liu L， Zou Z S. Study of microstructure and mechanical properties of TA15 titanium alloy test parts with different isothermal forging processes[J]. Hot Working Technology，2019，48(1)：151-157.

[13]谢英杰，付文杰，王蕊宁，等. 热处理对TA15钛合金中厚板材组织及力学性能的影响[J]. 钛工业进展,2013，30(6)：26-29.

Xie Y J，Fu W J，Wang R N，et al. Effect of heat treatment on microstructure and mechanical properties of TA15 plats[J]. Titanium Industry Progress，2013，30(6)：26-29.

[14]尤中源，刘文言，陈荣，等. α相含量对新型亚稳β钛合金动态力学性能的影响[J].稀有金属，2021，45(7)：891-896.

You Z Y，Liu W Y，Chen R，et al. Dynamic mechanical properties of new type of metastable titanium alloy with different α phase content[J]. Chinese Journal of Rare Metals，2021，45(7)：891-896.

[15]ASTM E8/E8M—2011，金属材料拉伸试验方法[S].

ASTM E8/E8M—2011，Standard test methods for tension testing of metallic materials[S].

[16]GB/T 229—2020，金属材料夏比摆锤冲击试验方法[S].

GB/T 229—2020， Metallic materials Charpy pendulum impact test method[S].

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