热等静压在铝合金铸件中的应用  

Application of HIP to Aluminum Alloy Casting

作　　者：丁剑 李亚辉 DING Jian;LI Ya-hui(AVIC Jincheng Nanjing Engineering Institute of Aircraft System,Nanjing 210000,Jiangsu,China)

机构地区：[1]中国航空工业集团公司金城南京机电液压工程研究中心,江苏南京210000

出　　处：《铸造》2021年第7期850-854,共5页Foundry

摘　　要：研究了热等静压对ZL114A耐高压壳体铸件显微缩松缺陷、铸件力学性能及金相组织的影响。结果表明,经热等静压处理后,铸件内部的显微缩松缺陷能够完全改善,铸件厚大部位剖切面荧光检验合格,金相组织正常,铸件本体切取抗拉强度基本维持不变,伸长率提高,铸件疲劳性能及使用可靠性显著提高。The effects of hot isostatic pressing(HIP)on the micro shrinkage defects,microstructure and mechanical properties of ZL114A high pressure shell castings were studied.The results show that the hot isostatic pressing can eliminate completely the micro shrinkage defects in the castings,and the fluorescence examination for the heavy sections of the castings is qualified.The microstructure and the tensile strength of the casting body remain basically unchanged,but the elongation rate is increased,and the fatigue performance and the service reliability of the castings are significantly improved after HIP.

关 键 词：热等静压 铝合金铸件 显微缩松 缺陷消除 

分 类 号：TG27[金属学及工艺—铸造]