Weldability of PM-TZM alloy using electron beam welding

被引：0

作者：

Zhang Y. ^{[1
]}

Wang T. ^{[1
,2
]}

Li N. ^{[1
]}

Zhang B. ^{[2
]}

Feng J. ^{[1
,2
]}

机构：

[1] Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology in Weihai, Weihai

[2] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2018年 / 39卷 / 03期

关键词：

Electron beam welding; Micro hardness; Microstructures; Mo-based alloy; Tensile strength;

D O I：

10.12073/j.hjxb.2018390068

中图分类号：

学科分类号：

摘要：

Weldability of PM-TZM molybdenum alloy using electron beam welding (EBW) was investigated in this study. EBW experiments on PM-TZM plates were carried out and microstructure and mechanical properties of the welded joints were analyzed. The results showed that the cross section of the weld zone (WZ) had a nail-like shape with the welding pores distributed along the fusion line. The WZ was composed of the coarsened equiaxed grains and columnar grains. The grains in heat affected zone were coarser than those in matrix area. Microhardness of joint presented an uneven distribution where the microhardness of the WZ was at the same level compared with the BM and the HAZ had the lowest microhardness. The tensile strength of the joint reduced sharply after welding compared to the BM that the room temperature tensile strength of the joint was 378 MPa which was 47% of BM. Tensile strength of the joint performed at 1 000℃ was 168 Mpa. The tensile test fracture located at WZ and the weld fracture presented characteristics of cleavage fracture. © 2018, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：57 / 60

页数：3

共 9 条

[1]

Han G., Zhao H., Fu W., Et al., Effect of holding time on interfacial microstructure and properties of TZM/ZrCp-W brazed joints, Transactions of the China Welding Institution, 38, 1, pp. 69-72, (2017)

[2]

Sharma I.G., Chakraborty S.P., Suri A.K., Preparation of TZM alloy by aluminothermic smelting and its characterization, Journal of Alloys & Compounds, 393, 1-2, pp. 122-127, (2005)

[3]

Miller M.K., Bryhan A.J., Effect of Zr, B and C additions on the ductility of molybdenum, Materials Science & Engineering A, 327, 1, pp. 80-83, (2002)

[4]

Matsuda F., Ushio M., Nakata K., Weldability of molybdenum and its alloy sheet, Transactions of JWRI, 9, pp. 69-78, (1980)

[5]

Liu P., Feng K.Y., Zhang G.M., A novel study on laser lap welding of refractory alloy 50Mo-50Re of small-scale thin sheet, Vacuum, 136, pp. 10-13, (2017)

[6]

Song X.G., Tian X., Zhao H.Y., Et al., Interfacial microstructure and joining properties of titanium-zirconium-molybdenum alloy joints brazed using Ti-28Ni eutectic brazing alloy, Materials Science & Engineering A, 653, pp. 115-121, (2016)

[7]

Feng J., Wang T., Zhang B., Et al., Research status analysis of electron beam welding for joining of dissimilar materials, Transactions of the China Welding Institution, 30, 10, pp. 108-112, (2009)

[8]

Luo Y., Liu J., Ye H., Et al., Numerical simulation on temperature field of electron beam welding of AZ61 magnesium alloy, Transactions of the China Welding Institution, 30, 3, pp. 73-76, (2009)

[9]

Chatterjee A., Kumar S., Tewari R., Et al., Welding of Mo-based alloy using electron beam and laser-GTAW hybrid welding techniques, Metallurgical & Materials Transactions A, 47, 3, pp. 1-10, (2015)

← 1 →