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首页> 外文期刊>Journal of Materials Engineering and Performance >Compressive Deformation Behavior of Open-Cell Cu-Zn-Al Alloy Foam Made Through P/M Route Using Mechanically Alloyed Powder
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Compressive Deformation Behavior of Open-Cell Cu-Zn-Al Alloy Foam Made Through P/M Route Using Mechanically Alloyed Powder

机译：用机械合金粉末通过P / M路径制备的开放式Co-Zn-Al合金泡沫的压缩变形行为

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摘要

Cu-Zn-Al foams of varying porosity fractions using mechanical alloyed powder have been made through powder metallurgy route. Here, NH4 (HCO3) was used as a space holder. Mechanically alloyed Cu-Zn-Al is made using a planetary ball mill taking the ratio of Cu/Zn/Al = 70:25:5 (by weight ratio). The ball/powder ratios were varied in the four ranges 10:1, 15:1, 20:1, and 25:1. Green compacts of milled powder and space holder samples were sintered at three stages at three different temperatures 350, 550, and 850 A degrees C for 1 h at each stage. The crystalline size and particle size as a function of ball/powder ratios were examined. The compressive deformation responses of foams are varied with relative density and the ball/powder ratio. The plateau stress and energy absorption of these foams increase with an increase in relative density but decreases with increase in ball/powder ratio, even though crystalline size decreases. This has further been explained on the basis of particle morphology as a function of ball/powder ratio.
机译：使用机械合金粉末的不同孔隙级分的Cu-Zn-Al泡沫通过粉末冶金途径制成。这里，NH4（HCO3）用作空间支架。采用行星球磨机制造机械合金化的Cu-Zn-Al，其采用Cu / Zn / Al = 70：25：5（重量比）的比例。球/粉末比在四个范围内变化10：1,15：1,20：1和25：1。在每个阶段，在三个不同温度350,550和850℃下，在三个不同温度350,550和850℃下烧结碾磨粉末和空间夹具样品的绿色块。检查了作为球/粉末比函数的结晶尺寸和粒度。泡沫的压缩变形响应具有相对密度和球/粉末比变化。这些泡沫的平台应力和能量吸收随着相对密度的增加而增加，但随着球/粉末比的增加而降低，即使结晶尺寸降低。这进一步基于作为球/粉末比的致函的颗粒形态来解释。

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