Semisolid die forging process, microstructures and properties of AZ31 magnesium alloy mobile telephone shells
Semisolid die forging process, microstructures and properties of AZ31 magnesium alloy mobile telephone shells
复制标题
AZ31镁合金手机外壳半固态模锻工艺、组织与性能
DOI：
10.1007/s12613-011-0493-y
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发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
Ren, Yong
中科院分区：
文献类型：
--
作者：
Guan, Renguo;Chen, Liqing;Cao, Furong;Zhao, Zhanyong;Ren, Yong
采用振动波形斜板法制备了AZ 31镁合金半固态浆料，研究了镁合金移动的手机外壳的半固态模锻工艺、组织和性能。在YA 32 -315四柱万能液压机上进行了半固态模锻成形。采用光学显微镜观察显微组织，450 SVD维氏硬度计分析硬度，CMT 5105拉伸试验机测试力学性能，扫描电镜观察拉伸试样断口形貌。结果表明，随着模锻力的增加，锻件的组织变得细小、致密。较低的预热温度和较长的保温时间有利于形成细小致密的显微组织。获得表面质量和显微组织优良的移动的手机外壳的最佳工艺条件为：模锻力为2000 kN，模具预热温度为250°C，保压时间为240 s。经430°C固溶处理和220°C时效8 h后，产品的维氏硬度为61.7，极限抗拉强度为193 MPa。拉伸断口显示准解理断裂和韧性断裂的混合机制。
A semisolid slurry of AZ31 magnesium alloy was prepared by vibrating wavelike sloping plate process, and the semisolid die forging process, microstructures, and properties of the magnesium alloy mobile telephone shell were investigated. The semisolid forging process was performed on a YA32-315 four-column universal hydraulic press. The microstructures were observed by optical microscopy, the hardness was analyzed with a model 450SVD Vickers hardometer, the mechanical properties was measured with a CMT5105 tensile test machine, and the fractograph of elongated specimens was observed by scanning electron microscopy (SEM). The results reveal that with the increase of die forging force, the microstructures of the product become fine and dense. A lower preheating temperature and a longer dwell time are favorable to the formation of fine and dense microstructures. The optimum process conditions of preparing mobile telephone shells with excellent surface quality and microstructures are a die forging force of 2000 kN, a die preheating temperature of 250°C, and a dwell time of 240 s. After solution treatment at 430°C and aging at 220°C for 8 h, the Vickers hardness is 61.7 and the ultimate tensile strength of the product is 193 MPa. Tensile fractographs show the mixing mechanisms of quasi-cleavage fracture and ductile fracture.
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影响因子：
6.2
作者：
R. Haghayeghi;E. J. Zoqui;N. Green;H. Bahai
通讯作者：
R. Haghayeghi;E. J. Zoqui;N. Green;H. Bahai
影响因子：
6.3
作者：
Friedrich, H;Schumann, S
通讯作者：
Schumann, S
影响因子：
1.8
作者：
Y. Gu;F. Zeng;F. Pan
通讯作者：
Y. Gu;F. Zeng;F. Pan
DOI：
10.1007/s12613-010-0109-y
发表时间：
2010-02
期刊：
International Journal of Minerals, Metallurgy, and Materials
影响因子：
--
作者：
Kaikun Wang
通讯作者：
Kaikun Wang
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
ShumingXing;LizhongZhang;JianboTan;ChuanlinZheng;HanwuLiu;Pengzhang;YunhuiDu
通讯作者：
ShumingXing;LizhongZhang;JianboTan;ChuanlinZheng;HanwuLiu;Pengzhang;YunhuiDu