焊管2024，Vol.47Issue(9)：40-43,56,5.DOI:10.19291/j.cnki.1001-3938.2024.09.007
TA2板材焊接接头组织及性能研究
Study on Microstructure and Properties of Welded Joint of TA2
高成龙 1李宪爽 1龚巍 2史然峰 2徐祥久2
作者信息
- 1. 哈尔滨锅炉厂有限责任公司,哈尔滨 150046
- 2. 哈尔滨锅炉厂有限责任公司,哈尔滨 150046||低碳热力发电技术与装备全国重点实验室,哈尔滨 150046
- 折叠
摘要
Abstract
The butt test of 10mm TA2 was carried by TIG welding.The microstructure and properties of the welded joint were studied through non-destructive testing,microstructure,mechanical properties and electrochemcial corrosion tests.The results showed that the surface of the welded joint was silver white,and no defects were found in nondestructive testing,the tensile strength of the welded joints were 492 MPa and 480 MPa.The joint had excellent bending properties,and the average impact absorption energy of the base metal and heat-affected zone were between 140 J and 150 J,and the average impact absorption energy of weld seam was between 90 J and 100 J.The maximum hardness value of the weld zone was 178HV1.0,which was higher than that of the heat-affected zone and the base metal area,and the lowest hardness value of the base metal area was 164HV1.0,The microstructure of TA2 base metal was equiaxedαphase,and the heat affected zone was coarseαphase and irregular serratedαphase,and there was acicular martensite(α´phase)in the weld microstructure.The electrochemical corrosion resistance of base metals were better than that of welded joints in the 10%HCl and 10%NaCl solutions.关键词
TA2/TIG焊/力学性能/金相组织/电化学腐蚀Key words
TA2/TIG welding/mechanical properties/metallographic structure/electrochemical corrosion分类
矿业与冶金引用本文复制引用
高成龙,李宪爽,龚巍,史然峰,徐祥久..TA2板材焊接接头组织及性能研究[J].焊管,2024,47(9):40-43,56,5.
