Study on several laser welding characteristics of AZ31B magnesium alloy

FANG Xuqiang

doi:10.7512/j.issn.1001-2303.2020.02.12

Views : 0 下载量: 1082 CSCD: 2

PDF
Export
Share
Collection
Album

Study on several laser welding characteristics of AZ31B magnesium alloy
Vol. 50, Issue 2, Pages: 58-63(2020)
Published：2020
DOI： 10.7512/j.issn.1001-2303.2020.02.12
稿件说明：

移动端阅览

DOI：

FANG Xuqiang. Study on several laser welding characteristics of AZ31B magnesium alloy[J]. Eletric Welding Machine2020, 50(2): 58-63. DOI： 10.7512/j.issn.1001-2303.2020.02.12.

摘要

采用激光焊、激光-TIG、激光-MIG及激光-超声4种焊接方法对AZ31B镁合金进行焊接

并讨论分析4种焊接方法下的镁合金焊接特性、微观组织以及力学性能。结果表明

激光焊焊缝下塌严重

激光复合焊接技术(激光-TIG、激光-MIG和激光-超声)则能显著改善焊缝下塌缺陷

得到成形良好的连续焊缝。激光复合焊接可有效减小焊缝中的气孔缺陷

其中激光焊焊缝中气孔率为4.3%

激光-TIG和激光-MIG焊缝中气孔率分别为3.4%和3.9%

而激光-超声焊缝中气孔率最低

仅为0.9%;同时

施加超声有助于细化焊缝晶粒尺寸

提高焊接接头的力学性能

接头强度可提高至母材的88.9%

与激光焊相比

提高了7.7%。

Abstract

采用激光焊、激光-TIG、激光-MIG及激光-超声4种焊接方法对AZ31B镁合金进行焊接

并讨论分析4种焊接方法下的镁合金焊接特性、微观组织以及力学性能。结果表明

激光焊焊缝下塌严重

激光复合焊接技术（激光-TIG、激光-MIG和激光-超声）则能显著改善焊缝下塌缺陷

得到成形良好的连续焊缝。激光复合焊接可有效减小焊缝中的气孔缺陷

其中激光焊焊缝中气孔率为4.3%

激光-TIG和激光-MIG焊缝中气孔率分别为3.4%和3.9%

而激光-超声焊缝中气孔率最低

仅为0.9%;同时

施加超声有助于细化焊缝晶粒尺寸

提高焊接接头的力学性能

接头强度可提高至母材的88.9%

与激光焊相比

提高了7.7%。

关键词

Keywords

references

Alert me when the article has been cited

提交

Design and experiment of electromagnetic pulse spot welding based on field shaper

Research progress of improving mechanical properties of Sn-Bi series lead-free solder

Effect of welding process on microstructure and properties of laser-arc hybrid welded joints of high-strength bainite steel

Verification and Reliability Assessment of Hydraulic Welding Models Using Welding Materials Compatible with 1 000 MPa-grade High-strength Steel for Hydrostatic Testing

Weld Formation and Backside Humping Suppression Mechanism in Laser-Arc Hybrid Welding of FB780 Ferrite-Bainite Dual-Phase Steel