Central defects control of Ti-6Al-4V alloy with heavy section reduction during flat cross wedge rolling

doi:10.1088/1757-899X/1270/1/012078

IMR OpenIR

	Central defects control of Ti-6Al-4V alloy with heavy section reduction during flat cross wedge rolling
	Shi,M J 1,2; Cheng,M 1; Zhang,S H 1; Tan,H 3,4; Chen,M 3,4; Petrenko,V 5; Kozhevnikova,G V 5
	2022-12-01
发表期刊	IOP Conference Series: Materials Science and Engineering
ISSN	1757-8981
卷号	1270 期号:1
摘要	Cross wedge rolling (CWR) process is expected as an efficient and innovative preforming process for the forged aero-engine blades. But it is still a grand challenge to control the process defects and the performance of the rolled parts. According to the requirements of an aero-engine Ti-6Al-4V (TC4) blade billet with heavy section reduction up to 83%, flat CWR tools were designed and optimized by the thermal-mechanical coupling finite element (FE) method. The metal flow, damage evolution, and the distribution of stress and strain during the forming process were analysed. Then, the CWR experiments were carried out on IM500 flat CWR mill under different technological conditions. The obtained rolled parts were subjected to non-destructive testing (NDT), tension tests and microstructure analysis. The results showed that the central defects, such as micropores and voids, which seriously reduce mechanical properties, occurred in some of the rolled parts more or less. The volume of central defects was closely related to the initial rolling temperature of the billets. When the heated temperature of the TC4 billet was higher than 850°C, the target rolled part without central defects can be obtained. This research work can be a reference for the single-wedge CWR forming of titanium alloy with heavy section reduction, promoting the application of CWR in the aero-engine blade preforming process.
关键词	cross wedge rolling Ti-6Al-4V alloy heavy section reduction thermo-mechanical coupling central defects
DOI	10.1088/1757-899X/1270/1/012078
语种	英语
WOS记录号	IOP:MSE_1270_1_012078
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177060
专题	中国科学院金属研究所
作者单位	1.Institute of Metal Research, Chinese Academy of Sciences, Shi-changxu Innovation Center for Advanced Materials, Shenyang 110016, P.R. China 2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, P.R. China 3.School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan 114051, P.R. China 4.Research Center of Magnesium Alloy Casting and Rolling Technology, University of Science and Technology Liaoning, Anshan 114051, P.R. China 5.Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk 220141, Belarus
推荐引用方式 GB/T 7714	Shi,M J,Cheng,M,Zhang,S H,et al. Central defects control of Ti-6Al-4V alloy with heavy section reduction during flat cross wedge rolling[J]. IOP Conference Series: Materials Science and Engineering,2022,1270(1).
APA	Shi,M J.,Cheng,M.,Zhang,S H.,Tan,H.,Chen,M.,...&Kozhevnikova,G V.(2022).Central defects control of Ti-6Al-4V alloy with heavy section reduction during flat cross wedge rolling.IOP Conference Series: Materials Science and Engineering,1270(1).
MLA	Shi,M J,et al."Central defects control of Ti-6Al-4V alloy with heavy section reduction during flat cross wedge rolling".IOP Conference Series: Materials Science and Engineering 1270.1(2022).