Insight into the Microstructure and Tensile Behavior of the W–Cu Composite Reinforced with Tungsten Fibers and Particulates,Advanced Engineering Materials

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Insight into the Microstructure and Tensile Behavior of the W–Cu Composite Reinforced with Tungsten Fibers and Particulates
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-06-11 , DOI: 10.1002/adem.202000502
Longchao Zhuo _{1,

2} , Hailiang Wang ₁ , Bin Luo ₁ , Yiheng Zhang ₁ , Jintao Xu ₁ , Shuhua Liang ₁ , Qiqi Zhang ₁ , Nan Liu _{1,

3} , Jiacheng Sun ₁

Affiliation

Herein, the microstructure and tensile property of the tungsten fiber (W_f)‐reinforced W–Cu composite are investigated by both experimental and simulation methods. An electron backscattering diffraction (EBSD) analysis reveals the elongated <110> textured grains in the W_f compared with the matrix part, ensuring the small quantities of the grain boundaries along the direction perpendicular to the tensile direction. Tensile tests further confirm its improved strength by ≈8.0% (526.8 ± 5.3 MPa) compared with the composite without inserted W_f, with a satisfactory tensile strain of 5.9 ± 0.3%. Based on the fractography observation and finite‐element analysis, typically stable energy dissipation behavior of the composite is considered to be ascribed to the interactive competition between complex fracture modes, including frictional fiber pullout, elastic bridging, interface debonding, and crack deflection.

中文翻译：

钨纤维和颗粒增强钨铜复合材料的微观结构和拉伸行为

在此，通过实验和模拟方法研究了钨纤维（W _f）增强的W-Cu复合材料的微观结构和拉伸性能。电子背散射衍射（EBSD）分析显示，与基体部件相比，W _f中有细长的<110>纹理晶粒，从而确保了沿垂直于拉伸方向的方向上的少量晶界。拉伸试验进一步证实，与未插入W _f的复合材料相比，其强度提高了约8.0％（526.8±5.3 MPa），具有令人满意的5.9±0.3％的拉伸应变。基于分形学观察和有限元分析，通常认为复合材料的稳定能量耗散行为归因于复杂断裂模式之间的相互作用，包括摩擦纤维拉拔，弹性桥接，界面剥离和裂纹变形。

更新日期：2020-06-11

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