文献类型：期刊文献

英文题名：Analyzing Forged Quality of Thin-Walled A-286 Superalloy Tube under Multi-Stage Cold Forging Processes

作者：Tao, Liang Feng, Zhiguo Jiang, Yulian Tong, Jinfang

第一作者：Tao, Liang

通信作者：Feng, ZG[1];Feng, ZG[2]

机构：[1]Guizhou Univ, Sch Mech Engn, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China;[3]Guizhou Univ, Key Lab Special Equipment & Mfg Technol, Guiyang 550025, Peoples R China

第一机构：Guizhou Univ, Sch Mech Engn, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Mech Engn, Guiyang 550025, Peoples R China;corresponding author), Guizhou Univ, Key Lab Special Equipment & Mfg Technol, Guiyang 550025, Peoples R China.

年份：2023

卷号：16

期号：13

外文期刊名：MATERIALS

收录：;EI(收录号：20232914416243);Scopus(收录号：2-s2.0-85165024167);WOS:【SCI-EXPANDED(收录号:WOS:001028117600001)】；

基金：This research was funded by National Natural Science Foundation of China (52165042), Guizhou Provincial Science and Technology Projects (20201Z049, 20201Y236), Guizhou Provincial Science and Technology Supporting Program (2023308), Excellent Young Talents Project of Guizhou Province (20215617), Guiyang Municipal Project for Fostering Science and Technology Talents (202143-1).

语种：英文

外文关键词：cold forging; thin-walled tube; A-286 superalloy; forging quality

摘要：Cold forging is suitable for manufacturing thin-walled tubes; however, a poorly planned forging process results in serious quality problems. This paper aims to determine an appropriate cold forging process for thin-walled A286 superalloy tube with ideal forming quality. We analyzed the effects of the two forging processes with reverse forging sequences on forming defects and hardness distribution in the thin-walled tubes via finite element simulation. The methods of optical microscope, micro-hardness, scanning electron microscope, and electron-backscattered diffraction were used to validate the tube forming quality. The simulation results revealed that the Type-I process was an appropriate forging process for meeting the quality requirements. For the Type-I process, an underfilling defect was observed at the bottom of the rod section of the tube. The stress concentration in the head section was lower than that in the Type-II process, potentially reducing the probability of crack initiation. Compared to the rod section, the head section may exhibit higher hardness magnitudes due to the greater strain distribution. The experimental results confirmed the feasibility of the Type-I process. The increased hardness in the head section may be primarily attributed to the more intense plastic deformation applied to the material in this section by the Type-I process.