影响因子：6.2
DOI码：10.1016/j.jallcom.2023.169376
发表刊物：Journal of Alloys and Compounds
关键字：Powder bed fusionHigh-entropy alloyPost thermal treatmentsMechanical properties
摘要：Powder bed fusion (PBF) and other additive manufacturing (AM) techniques show good potential for research and the processing industry. The reinforcement on the microstructure and mechanical properties is a practical necessity of additive manufacturing (AM) processed high-entropy alloy (HEA), which has structural and performance defects for application. Two post thermal treatment approaches based on annealing and hot isostatic pressing (HIP) for PBF technology printed CoCrFeNiMn HEA are proposed to enhance mechanical properties. No additional phase is detected by X-ray diffraction when the printed alloy undergoes post thermal processing, in addition to the face-centred-cubic crystalline phase. Both approaches give rise to almost fully dense arrangement structure with relative density exceeding 98%. Post treatments can significantly enhance the plasticity of PBF printed HEAs; in particular, they can lead to considerable increment in elongation and tensile properties, which can be attributed to the main mechanism of the synergistic effect of dislocation and nano-twin crystal deformation. In summary, both post thermal treatments are of great significance to the development of HEA with excellent mechanical properties. In particular, HIP leads to optimal structure and performance.
论文类型：SCI
学科门类：工学
文献类型：J
卷号：946
页面范围：169376
ISSN号：0925-8388
是否译文：否
发表时间：2023-06-15
收录刊物：SCI
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0925838823006795?via%3Dihub