钢管2023，Vol.52Issue(6)：6-11,6.DOI:10.19938/j.steelpipe.1001-2311.2023.6.06.11
热处理对Inconel 740H合金无缝管组织及性能的影响
Effect of Heat Treatment Process on Microstructure and Properties of Inconel 740H Alloy Seamless Tube
高佩 1庄建新2
作者信息
- 1. 江苏银环精密钢管有限公司,江苏宜兴 214200||江苏大学材料科学与工程学院,江苏镇江 212013
- 2. 江苏大学材料科学与工程学院,江苏镇江 212013
- 折叠
摘要
Abstract
The microstructure and mechanical properties of the Inconel 740H alloy seamless tube for the high-temperature components of 700 ℃ advanced ultra supercritical units are studied under different heat treatment temperatures and holding times.The results show that the longitudinal average grain size of the Inconel 740H alloy seamless tube continuously grows with the increase of heat treatment temperature and the holding time;the apparent activation energy of grain boundary migration in the alloy seamless tube within 10～60 min is 462.26～537.08 kJ/mol,which increases with the increase of time;the longitudinal average grain size of the seamless tube shows a parabolic relationship with the heat treatment holding time,and with the increase of temperature,the dynamic time index η increases first and then decreases;the tensile strength decreases with the increase of the heat treatment temperature and the holding time,and the effect of the heat treatment temperature on the tensile strength is greater than that of the holding time;the hardness of the seamless tube and the longitudinal average grain size conform to the Hall-Petch relationship.关键词
无缝管/Inconel 740H合金/热处理/晶粒尺寸/维氏硬度/激活能Key words
seamless steel tube/Inconel 740H alloy/heat treatment/grain size/Vickers hardness/activation energy引用本文复制引用
高佩,庄建新..热处理对Inconel 740H合金无缝管组织及性能的影响[J].钢管,2023,52(6):6-11,6.
