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过渡金属层对W/TiN/Ta层状复合材料弯曲及界面性能的影响

Effect of Transition Metal Layer on Bending and Interfacial Properties of W/TiN/Ta-Laminated Composite.

作者信息

Xu Gaoyong, Cai Jili, Wang Ruoqi, Xu Ang, Hu Yifei, Liu Jilong, Suo Jinping

机构信息

State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

出版信息

Materials (Basel). 2023 Mar 18;16(6):2434. doi: 10.3390/ma16062434.

DOI:10.3390/ma16062434
PMID:36984313
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10051259/
Abstract

The widespread applications of W in the fusion reactor are limited by its low-temperature brittleness, recrystallization brittleness, and irradiation-induced brittleness. Many toughening methods were used to improve the brittleness of W, such as adding second-phase particles, adding W fibers, preparing laminated composite, and so on. Among these, preparing laminated W-based composites has been proven to effectively improve both the low-temperature and high-temperature toughness of W. In this study, W/M/TiN/Ta-laminated composites with transition metal layer (M) were synthesized through the spark plasma sintering (SPS) at three different temperatures. The effects of nano-scale (Ni, Ti, and Cr) and micron-scale (Ni, Ti, and V) transition layers on the bending and interfacial properties of the W/M/TiN/Ta composite were studied via an electron probe micro-analyzer (EPMA) and transmission electron microscope (TEM). Compared with W/TiN/Ta, the flexural strength and strain of W/Ni/TiN/Ta were increased by 25.6% and 17.6%, respectively. Ni, Ti, and V micron transition layers can improve the combination of the W-TiN interface and decrease the joining temperature. The micron V layer has the best strengthening effect. The flexural strength of W/V/TiN/Ta reached 1294 MPa, much higher than W/Ta's 1041 MPa.

摘要

钨在聚变反应堆中的广泛应用受到其低温脆性、再结晶脆性和辐照诱导脆性的限制。人们采用了许多增韧方法来改善钨的脆性，如添加第二相粒子、添加钨纤维、制备层状复合材料等。其中，制备层状钨基复合材料已被证明能有效提高钨在低温和高温下的韧性。在本研究中，通过火花等离子体烧结（SPS）在三种不同温度下合成了具有过渡金属层（M）的W/M/TiN/Ta层状复合材料。通过电子探针微分析仪（EPMA）和透射电子显微镜（TEM）研究了纳米级（Ni、Ti和Cr）和微米级（Ni、Ti和V）过渡层对W/M/TiN/Ta复合材料弯曲性能和界面性能的影响。与W/TiN/Ta相比，W/Ni/TiN/Ta的抗弯强度和应变分别提高了25.6%和17.6%。Ni、Ti和V微米过渡层可以改善W-TiN界面的结合并降低连接温度。微米V层具有最佳的强化效果。W/V/TiN/Ta的抗弯强度达到1294MPa，远高于W/Ta的1041MPa。

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