电焊机2017，Vol.47Issue(12)：24-27,4.DOI:10.7512/j.issn.1001-2303.2017.12.05
铸造Ti-Al-Mo-Zr钛合金电子束焊接接头组织与性能
Microstructure and mechanical property of the 14 mm-thickness cast state Ti-Al-Mo-Zr alloy welded joint by the electron beam welding technique
雷小伟1
作者信息
- 1. 中国船舶重工集团公司第七二五研究所,河南洛阳471039
- 折叠
摘要
Abstract
The Ti-Al-Mo-Zr titanium alloy with 14 mm in thickness was welded by the electron beam welding (EBW) technique.A weld joint in good formation with free defects was obtained by the proper welding parameters.The weld joint's microstructure,microhardness and mechanical property were measured at the room temperature.The results show that,in the fusion zone there is mainly a mixture of the β and α structure with coarse needle shape.The structure in the HAZ transformed into basket widmanstaten.The microhardness in the weld seam is slightly higher than that in the base metal.The microhardness is uniformly distributed in the weld joint,which indicates that there is no reduction area in the joint.The tensile strength in the weld joint is higher than that in the base metal The average impact values of the weld seam and the HAZ are75 J/cm2 and 73 J/cm2,the Ti-Al-Mo-Zr alloy joint by the EBW technique has good impact toughness.关键词
电子束焊接/铸造Ti-Al-Mo-Zr钛合金/接头组织/力学性能Key words
electron beam welding/Ti-Al-Mo-Zr alloy/microstructure of the weld joint/mechanical property分类
矿业与冶金引用本文复制引用
雷小伟..铸造Ti-Al-Mo-Zr钛合金电子束焊接接头组织与性能[J].电焊机,2017,47(12):24-27,4.
