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首页> 外文会议>International Conference on Materials and Engineering Technology >Effect of consolidation and sintering parameters on the mechanical responses of nanocrystalline Al-Fe alloy processed by Mechanical Alloying
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Effect of consolidation and sintering parameters on the mechanical responses of nanocrystalline Al-Fe alloy processed by Mechanical Alloying

机译：机械合金化加工纳米晶体合金机械响应的合并和烧结参数的影响

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In this investigation, bulk ultra-fine grained and nanocrystalline Al-2 wt.% Fe alloy was produced by mechanical alloying (MA). The powder was mechanically milled in an attritor for 3 hours and yielded an average crystal size of ～63 nm. The consolidation and sintering was performed using a high frequency induction sintering (HFIS) machine at a constant pressure of 50 MPa. The prepared bulk samples were subjected to uniaxial compressive loading over wide range of strain rates for large deformation. To evaluate the effect of sintering conditions and testing temperature on the strain rate sensitivity, strain rate jump experiments were performed at high temperature. The strain rate sensitivity of the processed alloy increased with an increase in temperature. The density of the bulk samples were found to be between 95 to 97%. The average Vickers micro hardness was found to be 132 Hv_(0.1).
机译：在该研究中，通过机械合金化（MA）制备散装超细颗粒和纳米晶体Al-2重量％。将粉末在蒸炉中机械研磨3小时，得到〜63nm的平均晶体尺寸。使用高频感应烧结（HFIS）机器在50MPa的恒定压力下进行固结和烧结。在广泛的应变速率下对制备的散装样品进行单轴压缩负载，以进行大变形。为了评估烧结条件和测试温度对应变率灵敏度的影响，在高温下进行应变率跳跃实验。加工合金的应变率灵敏度随着温度的增加而增加。发现散装样品的密度在95至97％之间。发现平均维氏微型硬度为132 HV_（0.1）。

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