Enhanced phase stability of a BCC structure system high-entropy alloys by decreasing elastic distortion energy

Songshen Chen; Liang Wang; Lu Wang; Yunfei Xue; Benpeng Wang

doi:10.1088/1742-6596/1948/1/012207

Enhanced phase stability of a BCC structure system high-entropy alloys by decreasing elastic distortion energy

Songshen Chen, Liang Wang, Lu Wang, Yunfei Xue, Benpeng Wang^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

Lightweight BCC high-entropy alloys exhibit outstanding specific strength. However, these alloys usually have poor phase stability, causing brittle precipitates. These precipitates would worsen the plasticity. In order to improve the alloy performance, it is important to improve its phase stability. In this paper, the phase stability of two kinds of BCC high-entropy alloys at 400°C, 500°C and 600°C is investigated. The contributions of mixing enthalpy and elastic distortion energy to their phase stability are discussed. Besides mixing enthalpy, elastic distortion energy also plays a significant role in phase stability. Our results prove that decreasing elastic distortion energy is an effective way to improve phase stability of typical BCC HEAs.

Original language	English
Article number	012207
Journal	Journal of Physics: Conference Series
Volume	1948
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/1948/1/012207
Publication status	Published - 28 Jun 2021
Event	2021 2nd International Conference on Internet of Things, Artificial Intelligence and Mechanical Automation, IoTAIMA 2021 - Hangzhou, China Duration: 14 May 2021 → 16 May 2021

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Chen, S., Wang, L., Wang, L., Xue, Y., & Wang, B. (2021). Enhanced phase stability of a BCC structure system high-entropy alloys by decreasing elastic distortion energy. Journal of Physics: Conference Series, 1948(1), Article 012207. https://doi.org/10.1088/1742-6596/1948/1/012207

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abstract = "Lightweight BCC high-entropy alloys exhibit outstanding specific strength. However, these alloys usually have poor phase stability, causing brittle precipitates. These precipitates would worsen the plasticity. In order to improve the alloy performance, it is important to improve its phase stability. In this paper, the phase stability of two kinds of BCC high-entropy alloys at 400°C, 500°C and 600°C is investigated. The contributions of mixing enthalpy and elastic distortion energy to their phase stability are discussed. Besides mixing enthalpy, elastic distortion energy also plays a significant role in phase stability. Our results prove that decreasing elastic distortion energy is an effective way to improve phase stability of typical BCC HEAs.",

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AU - Chen, Songshen

AU - Wang, Liang

AU - Wang, Lu

AU - Xue, Yunfei

AU - Wang, Benpeng

PY - 2021/6/28

Y1 - 2021/6/28

N2 - Lightweight BCC high-entropy alloys exhibit outstanding specific strength. However, these alloys usually have poor phase stability, causing brittle precipitates. These precipitates would worsen the plasticity. In order to improve the alloy performance, it is important to improve its phase stability. In this paper, the phase stability of two kinds of BCC high-entropy alloys at 400°C, 500°C and 600°C is investigated. The contributions of mixing enthalpy and elastic distortion energy to their phase stability are discussed. Besides mixing enthalpy, elastic distortion energy also plays a significant role in phase stability. Our results prove that decreasing elastic distortion energy is an effective way to improve phase stability of typical BCC HEAs.

AB - Lightweight BCC high-entropy alloys exhibit outstanding specific strength. However, these alloys usually have poor phase stability, causing brittle precipitates. These precipitates would worsen the plasticity. In order to improve the alloy performance, it is important to improve its phase stability. In this paper, the phase stability of two kinds of BCC high-entropy alloys at 400°C, 500°C and 600°C is investigated. The contributions of mixing enthalpy and elastic distortion energy to their phase stability are discussed. Besides mixing enthalpy, elastic distortion energy also plays a significant role in phase stability. Our results prove that decreasing elastic distortion energy is an effective way to improve phase stability of typical BCC HEAs.

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SN - 1742-6588

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JO - Journal of Physics: Conference Series

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T2 - 2021 2nd International Conference on Internet of Things, Artificial Intelligence and Mechanical Automation, IoTAIMA 2021

Y2 - 14 May 2021 through 16 May 2021

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Enhanced phase stability of a BCC structure system high-entropy alloys by decreasing elastic distortion energy

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