热处理温度及时间对IN718高温合金的影响
Effects of Heat Treatment Temperature and Duration on IN718 Superalloy
杨湘杰 1宫梦奇 1白娜 2邹伟峰 1郑彬 1刘钦标1
作者信息
- 1. 南昌大学先进制造学院,南昌 330031;江西省高性能精确成形重点实验室,南昌 330031
- 2. 桂林电子科技大学,桂林 541004
- 折叠
摘要
研究了热处理温度及时间对IN718高温合金微观组织、力学性能及抗腐蚀性能的影响.结果表明,经过810℃ ×30 min的热处理后,合金晶粒度为7～8级,微观组织均匀,缺陷较少,此时合金具有最佳的综合力学性能,硬度(HV)达到250.48,抗拉强度比未处理合金提升了8.48%,腐蚀点面积最小,约为1 132.66 μm2.经过900℃ ×30 min的热处理后的合金腐蚀后增重最少,约为0.001 0 g,其次是810℃ ×30 min热处理后的合金,增重约为0.001 3 g.
Abstract
Effects of heat treatment temperature and duration on microstructure,mechanical properties and corrosion resistance of IN718 superalloy were investigated.The results indicate that grain size of the alloy is grade 7～8 with uni-form microstructure and absence of defects after heat treatment at 810 ℃ for 30 min,and desirable comprehensive mechanical properties can be obtained,where the hardness value reaches 250.48 HV,tensile strength is greatly increased by 8.48%,and the corrosion point area reaches the minimum of 1 132.66 μm2.The minimum weight of the alloy after corrosion is 0.001 0 g after heat treatment at 900 ℃ for 30 min,followed by that of ones at 810 ℃ for 30 min,which is about 0.001 3 g.
关键词
热处理/IN718高温合金/微观组织/力学性能/抗腐蚀性能Key words
Heat Treatment/IN718 Superalloy/Microstructure/Mechanical Properties/Corrosion Resistance引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据