在CrMnFeCoNi和FeFe之间的不相似接接头的形成,微观结构和特性
Krzysztof Ziewiec1, Artur Błachowski2, Sławomir Kąc3
1Institute of Technology, Faculty of Mathematics, Physics and Technical Science, Pedagogical University of Cracow, ul. Podchorążych 2, 30-084 Krakow, Poland.
Materials (Basel, Switzerland)
|July 29, 2023
概括
用铁接高合金会产生异质的接接头. 马氏体阶段主导接,与普通金属相比,硬度显著增加.
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.
- 接工程 接工程
背景情况:
- 高合金 (HEA) 具有独特的特性,但它们与铁等其他材料的接性带来了挑战.
- 了解这种不同接的微观结构演变和机械性能对于工程应用至关重要.
研究的目的:
- 为了研究一个高的CrMnFeCoNi合金与铁的接过程.
- 为了分析化学成分,相分布,硬度和横跨接关节的模.
- 为了阐明微观结构和不同接中的机械特性之间的关系.
主要方法:
- 中波红外热成像用于监测冷却序列.
- 金属学分析,纳米硬度缩和扫描电子显微镜用能量分散式X射线光谱 (EDS) 进行微观结构和组成评估.
- 通过X射线衍射和莫斯巴乌尔光谱来识别相组成部分 (马丁石,bcc,fcc).
主要成果:
- 在接接头上观察到显著的化学异质性和元素度梯度.
- 接接头主要由马氏体相占据,其中存在bcc (铁) 和fcc相.
- 与基础金属 (CrMnFeCoNi合金:高达290HV;铁:~150HV) 相比,接接头的硬度明显更高 (高达420HV).
- 的模量值与普通金属的特性一致 (HEA:202 GPa;铁:204 GPa).
结论:
- 接接头的硬度增加归因于马氏体阶段的普遍存在.
- 高热与铁的不相似接导致复杂的微观结构和性能变化.
- 这些发现为设计和制造涉及高气的接接头在先进工程应用中提供了关键的见解.
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