多孔CuAlMn形状记忆合金的制备及其压缩特性.pdfVIP

第 41 卷第 1 期 2012 年 2 月 河北工业大学学报 Vo 1.41 No .1 JOURNAL OF HEBEI UNIVERSITY OF TECHNOLOGY February 2012 文章编号: 1007-2373 (2012) 01-0057-05 多孔 CuAIMn 形状记忆合金的制备及其压缩特性 王倩，王清周，崔春翔，李诺 (河北工业大学材料科学与工程学院，天津 300130 ) 摘要 首次以 NaCl 颗粒为造孔剂利用烧结-脱溶法成功和j 备出了多孔 CuAIMn 形状记忆合金，并对其宏、 1%f.~见形 貌特征及压缩性能进行了研究.结采表明多孔 CuAIMn 形众记忆合金为三维贯通的开孔网络结构，孔洞分布均匀， 孔的大小、形貌与氯化纳颗粒相似.多孔 CuAIMn 形状记忆合金试样的准静态压缩应力-应变曲线分为明显的弹性 区、平台区及致密化区 3 个区域.长而平的平台区表明多孔CuAIMn 形状记忆合金具有良好的压缩吸能特性. 关键词多.:JL形状记忆合金; CuAIMn; NaCl; 烧结-脱溶;压缩性能 中图分类号 TG139.6; TG113.12 文献标志码 A Fabrication and compressive properties of a porous CuAIMn shape memory alloy WANG Qian , WANG Qing-zhou , CUI Chun-xiang , LI Nuo (Schoo1 ofMaterials Science and Engineering , Hebei University ofTechnology, Tianjin 300130, China) Abstract An open-ceIIed porous CuAIMn shape memory aIIoy has been successfuIly fabricated by using NaCl as space- holders via a sintering-dissolution process for the first time. Examination of macroscopic and microscopic morphologies and the quasi-static compressive test for the resultant material were also carried out. It is shown that the porous CuAIMn shape memory aIIoy exhibits uniformly distributed and interconnected pores. The size and morpology of the pores are similar to that ofNaCl particles. The compressive stress-straift curves ofthe porous CuAIMn shape memory aIIoy can be distinctly divided into three stages: elastici纱 plateau and densification. The long and flat plateau region demonstrates a good compressive energy absorption property ofthe present porous CuAIMn shape memory aIIoy Key words porous