退火温度对TZM高温合金组织和性能的影响
Effect of annealing temperature on microstructure and properties of TZM superalloy
张慧霞 1魏凯 1赵万方1
作者信息
- 1. 西安格美金属材料有限公司,陕西西安 710089
- 折叠
摘要
研究了不同退火温度下锻造TZM高温合金组织、硬度、力学性能以及拉伸断口形貌,并分析了产生不同断口形貌的原因.结果表明,变形量为82％的TZM合金,采用不同温度对其进行退火,组织性能以及断口形貌发生了明显的变化.随退火温度的升高,合金的组织也由锻态组织变为再结晶组织,并逐渐长大,合金的强度、硬度也随着退火温度的升高呈下降趋势.TZM合金退火温度不同,断口形貌也不尽相同,退火温度较低的为解理河流花样,退火温度较高的为解理河流花伴随部分沿晶断裂;当TZM合金经过1300 ℃ ×90 min退火后,组织和力学性能较好,断裂方式为韧性断裂.
Abstract
Microstructure,hardness,mechanical properties and tensile fracture morphology of as-forged TZM superalloy annealed at different temperatures were investigated,and the reasons for the generation of different fracture morphologies were analyzed.The results show that the microstructure,mechanical properties and fracture morphologies of the TZM alloy with a deformation of 82％change significantly when annealed at different temperatures.With the increase of annealing temperature,the microstructure of the TZM alloy changes from as-forged to as-recrystallized and gradually coarsenes,where the strength and hardness also decrease,and the fracture morphology varies with the annealing temperature.When the annealing temperature is lower,the fracture morphology is of cleavage river pattern.While when the annealing temperature is higher,the morphology is of cleavage river pattern accompanied by partial intergranular fracture.When the TZM alloy is annealed at 1300 ℃ for 90 min,the microstructure and mechanical properties are preferable,and the fracture mode is ductile.
关键词
TZM高温合金/退火温度/显微组织/力学性能/断口形貌Key words
TZM superalloy/annealing temperature/microstructure/mechanical properties/fracture morphology引用本文复制引用
出版年
2024
NETL
NSTL
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