Enhanced plasticity of Fe-based bulk metallic glass by tailoring microstructure  

合金微结构的调整对铁基块体金属玻璃室温塑性的影响(英文)

作　　者：郭胜锋[1] 王敬丰[2] 张红菊[2] 谢盛辉[3,4] 

机构地区：[1]西南大学材料科学与工程学院,重庆400715 [2]重庆大学国家镁合金材料工程技术研究中心,重庆400044 [3]深圳大学深圳市特种功能材料重点实验室,深圳518060 [4]深圳大学材料科学与工程学院,深圳518060

出　　处：《Transactions of Nonferrous Metals Society of China》2012年第2期348-353,共6页中国有色金属学报（英文版）

基　　金：Foundation item: Project (SWU110046) supported by the Startup Foundation for Doctors of Southwest University, China;Projects (XDJK2012C017,CDJXS11132228, CDJZR10130012) supported by the Fundamental Research Funds for the Central Universities, China;Project (CSTS2006AA4012) supported by the Chongqing Science and Technology Commission, China;Project (T201112) supported by Shenzhen Key Laboratory of Special Functional Materials,Shenzhen University,China

摘　　要：The room temperature compressive plasticity of Fe75MosP10Cs.3B1.7 bulk metallic glass （BMG） was improved from 0.5% to 1.8% by increasing the sample diameter from 1.5 mm to 2.0 mm. With increasing the sample diameter to 2.0 mm, a heterogeneous microstructure with in-situ formed a-Fe dendrite sparsely distributed in the amorphous matrix can be attained. This heterogeneous mierostructure is conceived to be highly responsible for the enhanced global plasticity in this marginal Fe-based BMG.报道一种新奇的现象,即随着Fe75Mo5P10C8.3B1.7块体金属玻璃的直径从1.5mm增加到2.0mm,其室温压缩塑性反而从0.5%增加到1.8%。这主要归因于随着铁基块体金属玻璃样品直径的增加,原位形成了零星的α-Fe枝晶相,这种在边缘化的块体金属玻璃中出现的异质结构是提高当前铁基块体金属玻璃室温塑性的主要原因。

关 键 词：bulk metallic glass composite RAPID-SOLIDIFICATION mechanical property 

分 类 号：TG139.8[一般工业技术—材料科学与工程]