金属材料的高应变率塑性变形及纳米化  

Plastic Deformation and Nanocrystallization of Metallic Materials at High Strain Rate

作　　者：屠风华[1,2,3] 潘晶[1,2] 刘新才[1,2] 

机构地区：[1]宁波大学材料科学与化学工程学院,浙江宁波315211 [2]宁波大学新型功能材料及其制备科学国家重点实验室培育基地,浙江宁波315211 [3]宁波大学理学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2009年第3期414-418,共5页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家重大基础研究前期专项(2004CCA04000);国家自然科学基金(50744014);浙江省自然科学基金(Y406389);宁波市科技攻关项目(2006B100054)

摘　　要：塑性变形方法是目前研究与制备金属纳米晶材料的技术方法之一,包括低应变率变形和高应变率变形2种.作者对金属材料在表面机械研磨和高能球磨这2种高应变率塑性变形条件下的微观组织演化及纳米晶形成机理的研究和最新进展进行了综述,旨在更好地理解该力学条件下金属材料的纳米化现象,以促进纳米材料的制备研究.The plastic deformation, with strain rate at both low and high, presently is one of the methods of investigating and preparing metallic nanocrystalline materials. In this paper, the research progress is reviewed about the microstructure evolution and nanocrystallization mechanism of metallic materials synthesized by the plastic deformation at high strain rate, such as surface mechanical attrition and high energy ball milling. The purpose of this work is to better understand the phenomenon of nanocrystallization in order to facilitate the study and preparation ofnanocrystalline materials.

关 键 词：高应变率塑性变形 微观组织演化 变形机理 

分 类 号：TG146.4[一般工业技术—材料科学与工程]