研究GH3230超合金板与侧的爬行行为
Honghua Zhao1,2, Dingnan Cheng1, Minmin Chen1
1AECC Hunan Aviation Powerplant Research Institute, Zhuzhou 412002, China.
Materials (Basel, Switzerland)
|December 31, 2025
概括
划痕通过改变稳定状态的爬行来提高GH3230超合金的爬行寿命. 在高温下,θ参数方法准确地预测了光滑和的标本的爬行行为和寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 金工业是金工业的一个方面.
背景情况:
- 了解GH3230等高性能超级合金的爬行行为对于高温应用至关重要.
- 几何不连续性的影响,如口,在爬行性能需要详细的调查.
研究的目的:
- 为了研究边缘口对GH3230超合金在900°C和1000°C的爬行行为的影响.
- 验证 θ 参数方法在光滑和的标本中对爬行应变和寿命的预测准确性.
主要方法:
- 在高温下对具有和没有边缘口的GH3230超合金板进行爬行测试.
- 使用 θ 参数方法来预测爬行应变曲线和爬行寿命.
- 分析爬行应变率,爬行骨折应变率和口寿命增强因素.
主要成果:
- 光滑的标本显示出主导第二阶段稳定状态的爬行,而的标本显示出第三阶段的延展率增加.
- 爬行骨折应变随着爬行负载的增加而减少.
- 该参数方法准确地预测了爬行菌株曲线和爬行生命,实验数据属于预测的分散带.
- 划痕显示,在同等净应力水平下,GH3230超级合金的爬行寿命增强效应.
结论:
- 划痕显著改变GH3230超级合金的爬行机制,特别是在三级爬行阶段.
- θ参数方法是一种可靠的工具,用于预测GH3230超合金的爬行性能,包括有的组件.
- 口寿命的增强受到应力度和应用的净应力的影响,较高的净应力导致更明显的效应.
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