热处理对N80A镍基高温组织与性能的影响  

Study of Heat Treatment for N80A Superalloy

作　　者：魏然[1] 吴会云[1] 章清泉[1] 曹宇[1] 李明扬[1] 

机构地区：[1]北京北冶功能材料有限公司,北京100192

出　　处：《金属材料研究》2016年第1期22-26,共5页Research on Metallic Materials

摘　　要：采用不同热处理制度，结合力学性能测试、扫描电子显微镜（SEM）、能谱仪（EDS）、金相显微镜（OM）等测试方法对不同状态的N80A镍基高温合金进行了研究。研究结果表明，铸态N80A合金经不同温度固溶热处理后，随固溶温度的升高，碳化物逐渐溶解，枝晶组织消失；合金经700℃／16h，AC时效后，棒状碳化物在晶内与晶界析出。对热轧态样品进行不同制度的固溶处理，随温度的升高，硬度值降低。The structure and mechanical properties of nickel base superalloy N80A under different heat treatment were examined by SEM, EDS, OM and the material testing ma chine. The results showed that the dendritic structure disappeared and short rod-like M23C6 carbide dissolved with the increase of solid solution treatment temperature. The rod-like carbide precipitated in the grain interior and along the grain boundary after aged at 700℃ for t6 hours, AC. The samples of hot-rolled N80A superalloy were treated at different solid solution treatment temperature. With the increase of temperature, the hardness grows lower.

关 键 词：NSOA镍基高温合金 显微组织 力学性能 

分 类 号：TG146.15[一般工业技术—材料科学与工程]