| 添加球磨粉末对铁基高温合金锻态显微组织与力学性能的影响 |
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| 引用本文： | 赵大鹏,刘咏,刘峰,张刘杰,刘东华,窦玉海. 添加球磨粉末对铁基高温合金锻态显微组织与力学性能的影响[J]. 粉末冶金材料科学与工程, 2011, 16(4): 580-586 |
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| 作者姓名： | 赵大鹏 刘咏 刘峰 张刘杰 刘东华 窦玉海 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室,长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目(50634060); 国家高技术研究发展计划(863计划)资助项目(2009AA03Z256) |
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| 摘 要： | 采用SEM、能谱分析、XRD、密度和室温拉伸性能测定相结合的方法,研究添加球磨粉末对铁基高温合金锻态组织和力学性能的影响.结果表明:添加球磨粉末的混合粉末锻造合金的显微组织由几百纳米的细晶粒和几十微米的粗晶粒组成,具有明显晶粒尺寸双峰分布特征,其中细晶粒的形成提高了合金的界面能,有利于元素的扩散、成分均匀化和孔隙的消除...
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| 关 键 词： | 铁基锻造合金 添加球磨粉末 双峰粒度分布 抗拉强度 塑性 |
Effect of additing mechanical alloyed powder on microstructure and mechanical properties of hot-forged iron-based alloys |
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| ZHAO Da-peng,LIU Yong,LIU Feng,ZHANG Liu-jie,LIU Dong-hua,DOU Yu-hai. Effect of additing mechanical alloyed powder on microstructure and mechanical properties of hot-forged iron-based alloys[J]. materials science and engineering of powder metallurgy, 2011, 16(4): 580-586 |
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| Authors: | ZHAO Da-peng LIU Yong LIU Feng ZHANG Liu-jie LIU Dong-hua DOU Yu-hai |
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| Affiliation: | ZHAO Da-peng,LIU Yong,LIU Feng,ZHANG Liu-jie,LIU Dong-hua,DOU Yu-hai (State key laboratory of Powder Metallurgy,Central South University,Changsha 410083,China) |
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| Abstract: | The effect of the addition of mechanical alloyed powder on the microstructure and mechanical properties of hot-forged iron-based alloys was investigated by SEM,EDS,XRD,density measurements and tensile tests at room temperature.The results show that the microstructure of the as-forged alloy with mixed powder which consists of mechanical alloyed powder and gas-atomized powder has a bimodal grain size distribution.It is composed of two distinguishable kinds of grains-fine grains of hundreds of nanometers sized... |
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| Keywords: | ODS iron-based alloy adding ball milling powder bimodal grain size ultimate tensile strength plasticity |
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