通过CoCrFeMnNi高合金中的西格玛相沉抑制塑料无otropy
Tae Hyeong Kim1, Jaimyun Jung2, Jae Wung Bae1
1Department of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of Korea.
Materials (Basel, Switzerland)
|March 28, 2024
概括
在CoCrFeMnNi高合金中的西格玛相沉显著降低了塑料异性质. 在700°C的火促进了西格玛相形成,与更高的温度相比,降低了平面异构性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是一种金工业.
- 物理金学 物理金学
背景情况:
- 同原子CoCrFeMnNi高合金 (HEAs) 具有独特的机械性能.
- 塑料异构性是金属板成型应用中的关键因素.
- 西格玛相沉对HEA异质性的影响需要进一步研究.
研究的目的:
- 为了研究西格玛相沉对等原子CoCrFeMnNi HEA.HEA的塑料异性质的影响.
- 为了关联热温度,西格玛相形成,以及由此产生的塑料异性质.
- 用微机械建模来验证实验发现.
主要方法:
- 冷,然后在700°C和800°C进行火.
- 使用实验技术对西格玛相沉的表征.
- 通过深度绘图测量平面异构性 (Δr) 和耳形状.
- 使用粘性塑料自相一致 (VPSC) 模型预测塑料应变比,正常和平面异构性.
主要成果:
- 在700°C的化结果是2.7%的Cr-丰富的西格玛相沉.
- 平面异构性 (Δr) 在700°C显著降低 (-0.16) 与800°C相比 (-0.35).
- 耳朵形状在700°C时证实了降低的异构性,这与VPSC模型的预测一致.
结论:
- 在700°C的化过程中诱导的西格玛相沉有效地降低了CoCrFeMnNi HEA中的塑料异质性.
- 西格玛阶段的形成是导致可见的塑性异构性下降的主要原因.
- 了解这种关系对于在深度绘图过程中优化HEA至关重要.
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