SUN Feng-lian, YANG Miao-sen. The Comparisons of Brazed Joint Microstructures between Homemade and Imported Brazing Filler Alloy[J]. 2009, 14(4): 118-120.
SUN Feng-lian, YANG Miao-sen. The Comparisons of Brazed Joint Microstructures between Homemade and Imported Brazing Filler Alloy[J]. 2009, 14(4): 118-120.DOI:
国产耐热合金钎料与进口钎料焊缝组织对比分析
摘要
利用真空钎焊方法
分别采用国产BNi-2和进口BNi-2钎料
对GH1035高温合金进行钎焊
通过对比不同宽度焊缝的焊缝组织
得出国产钎料焊缝宽度大于80μm时
焊缝中间存在共晶组织;当焊缝宽度在50~80μm时
焊缝主要组织为固溶体组织;焊缝宽度小于50μm时
焊缝出现夹渣等缺陷.而在与国产钎料同等宽度焊缝中
因进口钎料钎焊温度较高
焊缝组织主要为固溶体组织
焊缝及界面处元素浓度变化曲线较国产钎料平缓
焊缝组织优于国产钎料
界面处元素扩散好于国产钎料.
Abstract
With the vacuum brazing method
heat-resistant alloy GH1035 is brazed with homemade BNi-2 alloy and imported BNi-2 alloy respectively.By comparsons between different width of microstructures
it is shown that when brazing joint width of homemade BNi-2 alloy is between 80~120μm
there are eutectic structure in brazing joint;when the brazing joint width is between 50~80μm
brazing joint is mainly Solid Solutions
when the brazing joint width is less than 50μm
slag inclusion is founded in the brazing joint.while wi...