以焊缝中晶体上轴长度表述晶粒细化程度,研究了电子来扫描频率、焊接速度对Al-Mg合金焊缝金属晶粒细化的影响以及晶粒细化与焊缝金属硬度的关系分析了电子束回扫间距对焊接金属晶粒的可控细化作用结果表明:回扫间距决定晶粒细化的可控程度最佳回扫间距0.04mm时,凝固组织可由粗大柱状晶转化为细小等轴晶与无扫描焊接相比,晶体主轴长度减少到无扫描焊接时的1/5;焊缝硬度提高80%,接近母材水平
The effect of EB scanning frequency and welding speed on the refinement degree of Al-Mg alloy welded metal and the relationship between the refinement degree and the hardness of welded metal have been investigated respectively by the length of main axid i
参考文献
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| [2] | HinrichsJH,RamesyPW．WeldingJournal,1976,46(1):392寺井精英轻金属溶接,1997,15(1):273陈晓风,王世卿,李忠库焊接学报,1987,24(1):314陈晓风,肖义红,李忠库焊接论文集,1990,3(3) |
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