| 超重力场凝固对Cu-1.6%Cr共晶合金组织的影响 |
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| 引用本文： | 熊梅,甘章华,梁宇,冯继军,卢志红,刘静.超重力场凝固对Cu-1.6%Cr共晶合金组织的影响[J].材料科学与工程学报,2017(6):1005-1008,1004. |
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| 作者姓名： | 熊梅 甘章华 梁宇 冯继军 卢志红 刘静 |
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| 作者单位： | 1. 武汉科技大学材料与冶金学院,省部共建耐火材料与冶金国家重点实验室,湖北武汉430081;2. 武汉大学物理工程学院,湖北武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本实验分别在普通重力场和4230g超重力场下制备了Cu_(98.4)Cr_(1.6)合金的凝固样品,研究了重力场对Cu_(98.4)Cr_(1.6)合金棒状共晶尺寸和宏观偏析情况的影响。结果表明:与普通重力场的凝固组织相比,当Cu_(98.4)Cr_(1.6)合金棒状共晶在4230g超重力场下凝固时,棒状共晶组织得到了明显的细化,其直径由250~350nm降至100~200nm。同时,Cu_(98.4)Cr_(1.6)共晶合金沿超重力场方向的硬度和成分分布基本一致,未出现明显的宏观偏析。
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| 关 键 词： | 超重力场 Cu98.4Cr1.6合金 共晶组织 晶粒细化 宏观偏析 |
Influence of Super Gravity Field on Solidification Structures of Cu98.4 Cr1.6 Alloy |
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| Abstract: | Samples of Cu98.4 Cr1.6 alloy were solidified under a normal gravity field and a 4230 g super gravity field,respectively,in order to study the influence of the super gravity field on the degree of macro segregation and the formation rod-like eutectic structures.The results show that,compared with the sample prepared under the normal gravity field,the rod-like eutectic structures decrease significantly in the sample solidified under the 4230g super gravity field,and the diameter of the rod-like eutectic structures decreased from 250～350nm to 100～200nm.Additionally,when the Cu98.4 Cr1.6 alloy solidified under a 4230g super gravity field,obviously macro segregation was not observed,and the hardness and composition distributions of the Cu98.4 Cr1.6 alloy were nearly identical along the direction of the super gravity field. |
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| Keywords: | super gravity field Cu98 4Cr1 6alloy eutectic structures grain refine macro segregation |
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