哈斯特洛伊X与Inconel 738超级合金的过渡液相结合使用BNi-2中间层:微观结构和机械性能
Lin Yang1,2, Yuwei Zhao3,4, Xingdong Chen1,2
1State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Deyang 618000, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
超级合金的短暂液相结合需要完全的同热固化. 优化温度和时间消除了脆性区域,通过促进Mo扩散和改善化物可塑性,增强关节强度至587MPa.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 航空航天工程 航空航天工程
背景情况:
- 超级合金的不同连接为航空航天应用提供了协同性能优势.
- 哈斯特洛伊X (固体溶液增强) 和IN738 (降水增强) 是重要的航空航天材料.
研究的目的:
- 通过使用BNi-2中间层,研究Hastelloy X和IN738的瞬态液相结合.
- 确定粘合温度和时间对微观结构和机械性能的影响.
- 优化粘合参数,以提高关节性能.
主要方法:
- 哈斯特洛伊X和IN738与BNi-2中间层的过渡性液相结合.
- 对界面演变的微结构分析 (ASZ,ISZ,DAZ).
- 机械性能测试 (剪切强度,硬度).
主要成果:
- 完整的同热凝固对于关节的完整性至关重要.
- 较低的温度 (1050°C) 导致了热固化区 (ASZ) 中的脆性Cr-丰富的化物.
- 在最佳条件下 (1100°C/40分钟),通过Mo扩散产生完全异热固化区域 (ISZ),并通过Mo扩散提高化物可塑性,达到587MPa的剪切强度.
结论:
- 结合温度和时间协同控制异热凝固.
- 消除ASZ和优化ISZ/DAZ微观结构是高强度不相似关节的关键.
- 优化过渡液相结合为航空航天领域的先进超级合金连接提供了一条可行的途径.
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