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化对CoCrFeNiMn高合金微观结构和机械性能的影响

Mingyu Hu^1,2, Xuemei Ouyang^1,2, Fucheng Yin^1,2

¹School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China.

Materials (Basel, Switzerland)

|May 27, 2023

概括

粉末包装钻孔增强了--铁-- (CoCrFeNiMn) 高合金的表面硬度和耐磨性. 这一过程显著提高了微硬度,降低了摩擦系数,使合金更耐用.

科学领域:

材料科学材料科学材料科学
表面工程是什么?表面工程是什么?
金工业是金工业的一个方面.

背景情况:

高合金 (HEAs) 具有独特的性能,但通常需要对要求高的应用进行表面修改.
提高CoCrFeNiMn HEAs的表面硬度和耐磨性对于它们的工业用途至关重要.

研究的目的:

为了研究CoCrFeNiMn高合金的粉末封装钻孔工艺.
分析扩散动力学和无聊的机制.
为了评估沉对表面性能的影响,特别是硬度和耐磨性.

主要方法:

在不同的时间和温度下对CoCrFeNiMn HEAs进行粉末包装钻孔处理.
对钻孔层厚度的分析.
计算扩散参数 (频率系数D0和扩散激活能量Q).
使用Pt标记方法对元素扩散行为的研究.

主要成果:

发现无聊层的厚度随时间和温度而变化.
扩散参数被确定为:D0 = 9.15 × 10^-5 m2/s 和 Q = 206.93 kJ/mol.
在过程中,金属原子向外扩散,原子向内扩散.
表面微硬度显著增加至23.8 ± 1.4 GPa.
摩擦系数从0.86下降到0.480.61.61的时间.

结论:

粉末包装钻孔是一种有效的方法,可以增强CoCrFeNiMnHEAs的表面性能.
这项研究提供了对调节无聊过程的扩散机制的见解.
Bored CoCrFeNiMn HEAs表现出优越的硬度和减少的摩擦,表明更好的耐磨性.

关键词:

在化过程中,化化机制化机制增长动力学的增长动力学高的合金高的合金.耐磨性耐磨性耐磨性耐磨性

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