Transactions of Materials and Heat Treatment

Title：Influence of forging process parameters on residual stress of TC4 titanium alloy forgings

Authors：

Unit：

KeyWords：

ClassificationCode：TG319

year,vol(issue):pagenumber：2021,46(3):1-8

Abstract：

For the problem that TC4 titanium alloy forgings were prone to produce large residual stress during non-isothermal forging, the simulation model was established and regulated according to physical experiments, and the residual stresses of TC4 titanium alloy forgings under different forging process parameters were analyzed by numerical simulation method. Then, the influences of three key parameters of deformation temperature, deformation degree and deformation speed on the residual stress of TC4 titanium alloy forgings were studied, and the variation and distribution laws of residual stress were revealed. The results show that the radial residual stress of TC4 titanium alloy forgings is symmetrically distributed about the central axis, but the distribution is not uniform. From the outer surface to the core, the tensile stress is transformed into the compressive stress, and the stress at the center is relatively concentrated, while the axial residual stress of TC4 titanium alloy forgings is more evenly distributed from the upper surface to the lower surface, which is obviously smaller than the radial residual stress. Among the key parameters, the deformation temperature and the deformation degree have a significant influence on the residual stress of TC4 titanium alloy forgings, while the influence of deformation speed is relatively small. Thus, the residual stress of TC4 titanium alloy forgings is reduced by properly increasing the deformation temperature and the deformation speed and reducing the deformation degree.

Funds：

国家自然科学基金资助项目（51775427）

方秀荣（1971-），女，博士，教授E-mail：fangxr098@163.com

Reference：

[1]冯颖芳. 世界钛及钛合金的应用研究进展[J]. 世界有色金属，2012，(4):51-54.

Feng Y F. Research progress of application of titanium and titanium alloy in the world[J]. World Nonferrous Metals, 2012, (4): 51-54.

[2]叶勇，王金彦. 钛合金的应用现状及加工技术发展概况[J]. 材料导报，2012，26(S2):360-363.

Ye Y, Wang J Y. An overview on application status and processing technology development of titanium alloy[J]. Materials Review, 2012, 26(S2):360-363.

[3]孔得磊，雷丽萍，曾攀. 40Mn钢热变形行为及加工图研究 [J].锻压技术，2019,44(3):122-132.

Kong D L，Lei L P，Zeng P. Research on hot deformation behavior and processing map for 40Mn steel [J].Forging & Stamping Technology，2019, 44(3):122-132.

[4]CepedaJimenez, Carmen M, OrozcoCaballero, et al. Effect of processing temperature on the texture and shear mechanical properties of diffusion bonded Ti-6Al-4V multilayer laminates[J]. Metallurgical & Materials Transactions A, 2013, 44(10):4743-4753.

[5]吴捍疆，张丰收，燕根鹏. 工艺参数对TC4合金航空发动机叶片精锻残余应力的影响 [J]. 锻压技术，2020,45(1):9-14.

Wu H J，Zhang F S, Yan G P. Influence of process parameters on residual stress for TC4 alloy aeroengine blade in precision forging [J]. Forging & Stamping Technology，2020,45(1):9-14.

[6]张铁浩，王洋，方喜风，等. 残余应力检测与消除方法的研究现状及发展[J]. 精密成形工程，2017，9(5):122-127.

Zhang T H, Wang Y, Fang X F, et al. Research status and development of residual stress detection and elimination methods[J]. Journal of Netshape Forming Engineering, 2017, 9(5):122-127.

[7]黄定辉，贺磊，赵顺峰，等. 真空去应力退火温度对TA15钛合金锻件组织和性能的影响[J]. 热处理，2019，34(6):24-27.

Huang D H, He L, Zhao S F, et al. Influence of vacuum stress relief annealing temperatures on microstructure and mechanical property of TA15 titanium forging[J]. Heat Treatment, 2019, 34(6):24-27.

[8]谭玉全. 热处理对TC4钛合金组织、性能的影响及残余应力消除方法的研究[D]. 重庆：重庆大学，2016.

Tan Y Q. The Effect of Heat Treatment on Microstructure and Mechanical Properties of TC4 Titanium and the Research on Stress Relief After Heat Treatment[D]. Chongqing: Chongqing University, 2016.

[9]Zhao Z Y, Li L, Bai P K, et al. The heat treatment influence on the microstructure and hardness of TC4 titanium alloy manufactured via selective laser melting[J]. Materials, 2018, 11(8):1318.

[10]Shang D, Liu X D, Shan Y C, et al. Research on the stamping residual stress of steel wheel disc and its effect on the fatigue life of wheel[J]. International Journal of Fatigue, 2016, 93(11):173-183.

[11]姜云禄，余陈，陈静，等. 钛合金窄间隙TIG焊试板热处理前后表面残余应力研究[J]. 航空制造技术，2018，61(8):62-66.

Jiang Y L, Yu C, Chen J, et al. Study on surface residual stress before and after heat treatment of TIG welding test plate with narrow gap in titanium alloy[J]. Aeronautical Manufacturing Technology, 2018, 61(8):62-66.

[12]中国锻压协会. 特种合金及其锻造[M]. 北京：国防工业出版社，2009.

China Forging and Pressing Association. Special Alloys and Their Forging[M]. Beijing: National Defense Industry Press, 2009.

Service：

【This site has not yet opened Download Service】【Add Favorite】