摘要
采用真空电子束焊对Ti3Al合金与TC11合金进行焊接,研究焊接电流对Ti3Al/TC11焊缝区组织及合金元素扩散的影响。结果表明,随焊接电流增大,焊缝区组织明显粗化,且晶粒尺寸差异逐渐减小;当焊接电流增大至25 mA时,焊缝区组织为粗大β柱状晶。焊接电流对焊缝区各合金元素含量影响较小,但对其均匀性影响较显著,这与焊缝区显微组织形貌有关。随焊接电流的增大,焊缝区合金元素含量均匀性变差。
Ti3 Al and TC11 alloys were joined by electron beam welding .The influence of welding current on microstructure and elements diffusion of the weld seam for Ti 3 Al/TC11 alloy were investigated .The results show that the microstructure coarsens and the difference of grain size decreases with welding current increasing , and the coarse βcolumnar grain is formed in the weld seam when the welding current increases to 25 mA.Although the welding current has a little effect on the alloying elements content in the weld , but it has a relatively significant effect on its uniformity , which is related to the microstructure morphology in the weld seam .With welding current increasing , the uniformity of alloying elements content in the weld seam become worse .
出处
《金属热处理》
CAS
CSCD
北大核心
2014年第3期75-77,共3页
Heat Treatment of Metals
