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运用金相显微分析、电子显微分析等手段,研究AuAg8/Ag/CuNi30微异型复合接点带制备过程中AuAg8/Ag复合带材与基体材料CuNi30带材的滚焊复合工艺。分析复合带材层间结合强度与焊接工艺参数的关系。成功制备的AuAg8/Ag/CuNi30微异型复合接点带中,Ag与CuNi30的复合界面原子扩散层宽度为2μm左右。 相似文献
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Ti61.57Zr17.15Ni14.80Cu6.38(atom fraction, %) metallic glass has applications in brazing. Using the hammer-and-anvil technique, Ti61.67Zr17.15Ni14.80Cu6.38 metallic glass was prepared. The crystallization behavior for this metallic glass was investigated by differential scanning calorimetry(DSC), X-ray diffractometry (XRD) and transmission electron microscopy(TEM). There are three stages in DSC curves of crystallization. The reduced glass temperature Trg is 0.42. The kinetic parameters of crystallization were calculated by a set of equations of the maximum crystallization rate. The crystalline phase formed in the MSⅠ(Metastable stage D is Zr2Cu, in the MSII is α-Ti and in the MSⅢ is Ti2Ni. This kind of alloy has lower glass forming ability, and the Ti61.67Zr17.15Ni14.80Cu6.38 metallic glass has lower thermal stability. 相似文献
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运用连续滚焊复合技术,研究AuAg8/AgNi10/CuNi20微异型复合接点带制作工艺。通过金相显微分析、电子显微分析、矫形试验、拧绞疲劳试验等手段,对比不同工艺参数下带材的结合强度,分析焊接电流、焊接时间和电极压力等参数对结合强度的影响。结果表明,采用合适的电极材料匹配、电极压力、焊接电流及散热条件,可复合出质量合格的较长的AuAg8/AgNi10/CuNi20复合带材。 相似文献
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一、新型高速钢堆焊焊条的研制 众所周知,高速钢(W18Cr4V)具有高的红硬性、突出的高温强度和对塑性变形抗力以及高的耐磨性,是广泛使用的刀具、模具材料。 但是由于W18Cr4V钢属于莱氏体钢,在铸焊态下,钢中存在着大量的连续网状共晶莱氏体,呈粗大的骨骼状分布于晶界,使其韧性很差,堆焊时易产生 相似文献
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