冷轧对GH4169合金组织与性能的影响  

Effects of Cold Rolling on Microstructure and Performance of GH4169 Alloy

作　　者：李荣斌[1] 姚枚[2] 刘文昌[2] 何贤昶[1] 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室,上海200030 [2]燕山大学材料工程学院,河北秦皇岛066004

出　　处：《金属热处理》2002年第7期12-15,共4页Heat Treatment of Metals

基　　金：国家自然科学基金 (59971 0 39)

摘　　要：采用X射线衍射技术及透射电子显微镜研究了冷轧变形道次及不同变形量对GH416 9合金中金属间化合物γ″相和δ相的分布、形貌、数量及性能的影响。结果表明 :随着变形程度的增加 ,析出相由晶内和晶界析出逐渐转变到形变带及位错墙处析出 ,γ″相的尺寸逐渐减小 ,γ″、δ相的析出含量以及材料的强度逐渐增加。双道次冷轧变形提高了δ相的含量 。The morphology,microstructure,tensile property and the volume fractions of γ″ phase and δ phase as afunction of cold rolling reduction in GH4169 alloy have been investigated.Two treatments are developed to produce either single pass cold rolling or double pass cold rolling.The results show that the nucleation sites change from interior grain or grain boundary to deformation bands and the dimension of γ″ particle decreases with cold rolling reduction increasing.Double pass cold rolling technology not only enhances the δ phase volume fraction but also decreases the γ″ phase fractions and tensile strength compared with single pass cold rolling.

关 键 词：冷轧 GH4169合金 组织 性能 析出相 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TG339[金属学及工艺—金属材料]