本文選題：Mg-Al + Ni箔��； 參考：《材料工程》2015年01期

【摘要】：采用擴(kuò)散焊接工藝,通過(guò)添加Ni箔中間層對(duì)鎂鋁異種金屬進(jìn)行焊接。利用無(wú)損檢測(cè)、電子探針、掃描電鏡、萬(wàn)能材料試驗(yàn)機(jī)研究了Mg/Ni/Al焊接接頭界面的組織結(jié)構(gòu)和力學(xué)性能。結(jié)果表明:Ni箔中間層可以有效阻止界面處Mg,Al元素的相互擴(kuò)散,接頭界面處沒(méi)有生成Mg-Al金屬間化合物。在焊接溫度440℃,保溫時(shí)間90min時(shí),接頭抗剪強(qiáng)度達(dá)到最大值20.5MPa。Mg/Ni/Al接頭由Al,Ni和Mg,Ni的相互擴(kuò)散形成,接頭界面形成Al-Ni過(guò)渡區(qū)和Mg-Ni過(guò)渡區(qū),界面主要物相分別為Al3Ni2,Al3Ni和Mg2Ni,過(guò)渡區(qū)厚度隨焊接溫度升高而增加。
[Abstract]:A diffusion welding process was used to weld magnesium and aluminum dissimilar metals by adding Ni foil interlayer. The microstructure and mechanical properties of mg / Ni / Al welded joints were studied by means of nondestructive testing, electron probe, scanning electron microscope and universal material testing machine. The results show that the Mg-Al intermetallics at the interface can be effectively prevented by the interlayer of 1: Ni foil, and no Mg-Al intermetallic compounds are formed at the interface of the joint. When the welding temperature is 440 鈩，

本文編號(hào)：2025844