摘要
为分析SiCp/Al基复合材料的焊接性,以Ti-Mg混合粉末作为填充材料,采用氮氩混合等离子气体对SiCp/Al基复合材料进行等离子弧原位焊接.结果表明,填充Ti-Mg混合粉末进行等离子弧原位焊接时接头组织致密,结合较好,焊缝组织中生成了新的增强颗粒,未发现明显的针状相,从而有效地提高了接头的力学性能.力学性能试验表明,采用Ti-Mg混合粉末进行等离子弧原位焊接所获得的最大拉伸强度为204.7 MPa.此外还探讨了Mg在等离子弧原位焊接中的作用.
In order to analyze the weldability of SiC particle reinforced aluminum metal matrix composites （SiCp/Al MMCs） , plasma arc in-situ welding of SiCp/Al MMCs was carried out using argon-nitrogen mixture as plasma gas with Ti -Mg mixed powder as in-situ material. The results show that the dense metallurgical joints with obscure interface could be abtained by adding Ti - Mg mixed powder into the material, and a new composite reinforced is produced in the weld. The needle-like phases are not found, effectively ensuring the quality of joints. The mechanical testing results show that the maximum strengths obtained with Ti -Mg mixed powder as ＂in-situ＂ material are 204.7 MPa. The effect of magnesium on plasma arc in-situ welding of SiCp/Al MMCs is also discussed.
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2008年第1期39-42,共4页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(50475126)
江苏省研究生创新计划资助项目(xm04-27)
