铸造2025，Vol.74Issue(7)：915-923,9.
基于显微组织特征的定向凝固高温合金涡轮叶片服役温度评价方法
Evaluation Method for Service Temperature of Directionally Solidified Superalloy Turbine Blades Based on Microstructural Characteristics
张迈 1王尧 2吴雨萌 3卢广先 4崔丽丽 1王海文 1张剑1
作者信息
- 1. 中国航发北京航空材料研究院,先进高温结构材料重点实验室,北京 100095
- 2. 中国航发北京航空材料研究院,先进高温结构材料重点实验室,北京 100095||东北大学材料科学与工程学院,辽宁沈阳 110819
- 3. 中国航发北京航空材料研究院,先进高温结构材料重点实验室,北京 100095||北京科技大学材料科学与工程学院,北京 100083
- 4. 中国航发北京航空材料研究院,先进高温结构材料重点实验室,北京 100095||西北工业大学力学与土木建筑学院,陕西西安 710072
- 折叠
摘要
Abstract
The microstructure evolution of a second-generation directionally solidified superalloy after thermal exposure at 860-1 140 ℃ was investigated using SEM.The results indicated that the primary γ'phase,γ matrix,and secondary γ'phase exhibit regular changes with increasing temperature.Below 980 ℃,the primary γ'phase and γ matrix remained relatively stable.without secondary γ'phase precipitation.When temperatures exceed 980 ℃,as the temperature increased,the primary γ'phase showed decreased volume fraction and increased particle size,while the width of the matrix channel increased.The secondary γ'phase occurred with increasing size and volume fraction.According to the variation law of microstructure characteristic parameters,a model and method for evaluating turbine blade service temperature based on microstructure parameters are proposed,which has certain engineering application value.关键词
定向凝固高温合金/显微组织/服役温度/涡轮叶片Key words
directionally solidified superalloy/microstructure/service temperature/turbine blade分类
矿业与冶金引用本文复制引用
张迈,王尧,吴雨萌,卢广先,崔丽丽,王海文,张剑..基于显微组织特征的定向凝固高温合金涡轮叶片服役温度评价方法[J].铸造,2025,74(7):915-923,9.
