Formation and Sintering Behavior of Nanocrystalline Fe-Ni Powder by Mechanical Alloying

作     者：CHEN Wen-ge GU Chen-qing DING Bing-jun 

作者机构：Xi'an University of Technology Xi'an Jiaotong University 

出 版 物：《Journal of Iron and Steel Research International》 (JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL)

年 卷 期：2003年第10卷第3期

页      面：75-78页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Item Sponsored by Education Office Foundation of Shanxi Province of China(02JK131-1) 

主　　题：mechanical alloying nanostructured material mechanical property hot pressing sintering 

摘      要：The solid sintering behavior and mechanical properties of Fe-Ni powders prepared by mechanical alloying of elemental powders and hot pressing sintering in vacuum atmospheres were investigated. It was observed that the microstructure of the powder particles evolves in three stages. The alloy powder with average grain size of 20-30 nm was obtained. The sinter densification depends crucially on the particle rearrangement and the large amount of internal strain introduced during milling. The theoretical density of over 95 % was obtained after hot pressing sintering at 800 ℃ for 30 min with pressure of 50 MPa. No significant grain growth was observed during sintering. And also relatively high hardness was obtained.