本文選題：等徑角擠壓 + 剪切強(qiáng)度　； 參考：《Transactions of Nonferrous Metals Society of China》2017年09期

【摘要】：研究了等徑角擠壓層狀復(fù)合材料的微觀組織、擴(kuò)散和機(jī)械結(jié)合行為以及顯微硬度分布。在室溫和高溫(300°C)下采用1～4道次等徑角擠壓工藝制備Al-Cu和Cu-Ni層狀復(fù)合材料。掃描電鏡微觀結(jié)構(gòu)表征及抗剪強(qiáng)度試驗(yàn)結(jié)果表明,由于在等徑角擠壓過(guò)程中具有更高的塑性變形容忍度,4道次等徑角擠壓試樣層片材料之間的結(jié)合強(qiáng)度遠(yuǎn)遠(yuǎn)高于1道次樣品。此外,剪切強(qiáng)度數(shù)據(jù)表明,升高等徑角擠壓溫度會(huì)使試樣的剪切強(qiáng)度顯著增加,這主要是由于Al/Cu和Cu/Ni界面在高溫下形成了擴(kuò)散連接。等徑角擠壓Cu/Ni/Cu復(fù)合材料的高溫剪切結(jié)合強(qiáng)度明顯高于等徑角擠壓Cu/Al/Cu復(fù)合材料。
[Abstract]:The microstructure, diffusion and mechanical bonding behavior and microhardness distribution of the laminated composites were studied.Al-Cu and Cu-Ni laminated composites were prepared at room temperature and high temperature (300 擄C) by 1-pass 4-channel secondary angular extrusion.The results of SEM microstructure characterization and shear strength test show that the binding strength of the four pass secondary angular extruded laminates is much higher than that of the first pass due to the higher plastic deformation tolerance during the equal-diameter angular extrusion.In addition, the shear strength data show that the shear strength of the samples increases significantly when the equal angular extrusion temperature is increased, which is mainly due to the formation of diffusion bonding between the Al/Cu and Cu/Ni interfaces at high temperature.The high temperature shear bonding strength of Cu/Ni/Cu composites is higher than that of Cu/Al/Cu composites.
【作者單位】： Department
【分類號(hào)】：TB331

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