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高温变载荷条件下镍基高温合金蠕变损伤研究

Study on Creep Damage of Ni-Based Superalloy Caused by Variable Load Conditions at Elevated Temperatures.

作者信息

Wee Sunguk, Kim Keekeun, Park Kibum, Seok Changsung

机构信息

Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Korea.

出版信息

Materials (Basel). 2021 Nov 18;14(22):6971. doi: 10.3390/ma14226971.

DOI:10.3390/ma14226971
PMID:34832371
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8621902/
Abstract

Higher fatigue and creep resistance at high temperatures are the essential properties for materials such as those used in gas turbines for power generation and aircraft turbines. Therefore, the nickel-based superalloy CMSX-4 was developed through single-crystal casting to satisfy these requirements. In this study, the CMSX-4 creep test results reported by previous researchers were used to mathematically derive an equation to estimate the amount of creep damage occurring under variable load conditions. In addition, low-cycle fatigue tests were performed, and the effect of creep damage occurring during fatigue on material failure was described.

摘要

对于用于发电燃气轮机和航空涡轮机等的材料而言，在高温下具有更高的抗疲劳和抗蠕变性能是其基本特性。因此，通过单晶铸造开发了镍基高温合金CMSX-4以满足这些要求。在本研究中，利用先前研究人员报告的CMSX-4蠕变试验结果，通过数学推导得出一个方程，用于估算在可变载荷条件下发生的蠕变损伤量。此外，还进行了低周疲劳试验，并描述了疲劳过程中发生的蠕变损伤对材料失效的影响。

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本文引用的文献

1
Low-Cycle Fatigue Crack Initiation Simulation and Life Prediction of Powder Superalloy Considering Inclusion-Matrix Interface Debonding.考虑夹杂物-基体界面脱粘的粉末高温合金低周疲劳裂纹萌生模拟与寿命预测
Materials (Basel). 2021 Jul 18;14(14):4018. doi: 10.3390/ma14144018.
2
Influence and Sensitivity of Temperature and Microstructure on the Fluctuation of Creep Properties in Ni-Base Superalloy.温度和微观结构对镍基高温合金蠕变性能波动的影响及敏感性
Materials (Basel). 2020 Oct 24;13(21):4758. doi: 10.3390/ma13214758.
3
Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant.
Materials (Basel). 2020 Feb 18;13(4):900. doi: 10.3390/ma13040900.