中南大学学报（自然科学版）2000，Vol.31Issue(5)：437-440,4.
高性能耐热铝合金管材的制备及性能
Preparation of heat resisting aluminum alloy pipes
摘要
Abstract
Heat resisting aluminum alloy pipes with the dimension of outer dia/inner dia×length = 300 mm/150 mm×500 mm were prepared by multi-layer spray deposition(MLSD) technology. The microstructures and the mechanical prop-erties at different process stages were tested and analyzed. No other dispersion but Al12(Fe,V)3Si exists in a-A1 matrix.The billet′s ultra strength was increased from 210 MPa to 456 MPa at room temperature and from 111 MPa to 184 MPa at350℃ after extrusion. After consequence latching, the pipe′s properties decrease a little at room temperature and rema-ins unchanged at 350℃. After 3 hours annealing at 425 C, only properties at room temperature have changed, whichshows the pipe billets have excellent mechanical property and MLSD is a good way to prepare heat resisting Al alloy.关键词
喷射沉积/快速凝固/耐热铝合金Key words
spray deposition/rapid solidification/heating resisting Al alloy分类
矿业与冶金引用本文复制引用
袁武华,陈振华..高性能耐热铝合金管材的制备及性能[J].中南大学学报（自然科学版）,2000,31(5):437-440,4.基金项目
国家"九五"攻关重点资助项目(95-YS-010) （95-YS-010）
