Effect of rheo-diecast process on the mechanical properties of A390 alloy by serpentine channel
Effect of rheo-diecast process on the mechanical properties of A390 alloy by serpentine channel
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DOI：
10.1007/s12613-016-1337-6
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发表时间：
2016-10
期刊：
影响因子：
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通讯作者：
Kunhyok Ri;W. Mao;Zhi-kai Zheng;Myongsik Kim;Yong-Deok Sin
中科院分区：
文献类型：
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作者：
Kunhyok Ri;W. Mao;Zhi-kai Zheng;Myongsik Kim;Yong-Deok Sin
研究了流变压铸工艺参数和T6热处理对纯铜蛇形通道流变压铸（RDC）半固态A390合金组织和力学性能的影响。结果表明，RDC试样的力学性能随浇注温度和压射压力的变化而变化。在这种情况下，较低的浇注温度导致RDC A390合金的较好的抗拉强度和伸长率;然而，当浇注温度降低到660°C时，抗拉强度和伸长率降低。较高的注射压力导致RDC A390合金的机械性能改善。T6热处理在一定程度上提高了RDC A390合金的抗拉强度和塑性。然而，当浇注温度和注射压力分别大于670°C和70 MPa时，机械性能急剧下降。
In this paper, the effects of rheo-diecast process parameters and T6 heat treatment on the microstructure and mechanical properties of the rheo-diecasting (RDC) semi-solid A390 alloy prepared through pure copper serpentine channel were investigated. The results indicate that the mechanical properties of the RDC samples change with the pouring temperature and injection pressure. In this case, a lower pouring temperature results in better tensile strength and elongation of the RDC A390 alloy; however, the tensile strength and elongation decrease when the pouring temperature decreases to 660°C. Higher injection pressures result in the improved mechanical properties of the RDC A390 alloy. To some extent, T6 heat treatment improves the tensile strength and ductility of the RDC A390 alloy compared to those of the non-heat treated alloy. However, when the pouring temperature and injection pressure are greater than 670°C and 70 MPa, respectively, the mechanical properties are sharply diminished.