In situ synthesis of TiB2 particulate reinforced copper matrix composite with a rotating magnetic field
In situ synthesis of TiB2 particulate reinforced copper matrix composite with a rotating magnetic field
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DOI：
10.1016/j.matdes.2014.09.025
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发表时间：
2015
影响因子：
8.4
通讯作者：
Tongmin Wang;C. Zou;Zongning Chen;Mingyu Li;Wei Wang;Rengeng Li;Huijun Kang
中科院分区：
文献类型：
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作者：
Tongmin Wang;C. Zou;Zongning Chen;Mingyu Li;Wei Wang;Rengeng Li;Huijun Kang
采用Cu-Ti和Cu-B中间合金制备了原位自生TiB 2颗粒增强铜基复合材料。采用旋转磁场（RMF）改善原位TiB 2颗粒在铸造过程中的分散性。研究了RMF对复合材料的显微组织、TiB 2分布和力学性能的影响。结果表明，TiB 2颗粒在Cu基体中的分布得到改善，从而提高了Cu/TiB 2复合材料的力学性能。Cu-1 wt.%的合金的极限抗拉强度和维氏硬度随着磁场电流的变化，30%压下量热轧和90%压下量冷轧的TiB 2分别从405 MPa、125 HV提高到470 MPa、171 HV。并对RMF对TiB 2在铜基体中分布的作用机理进行了解释和分析。
In situ TiB2particulate reinforced copper matrix composites were prepared using Cu–Ti and Cu–B master alloys. Rotating magnetic field (RMF) was employed to improve the dispersion of in situ TiB2particles during casting. The influences of RMF on the microstructures, TiB2distribution and mechanical properties of thus prepared composites were investigated. The results show an improved distribution of TiB2particles in the copper matrix, which resulted in the improvement of mechanical properties of Cu/TiB2composites. The ultimate tensile strength and Vickers hardness of Cu–1 wt.% TiB2with a 30% reduction hot rolling and a 90% reduction cool rolling increased from 405 MPa, 125 HV to 470 MPa, 171 HV by the variation of field currents, respectively. Moreover, the action mechanism of RMF on TiB2distribution in the copper matrix was explained and analyzed.