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首页> 外文会议>Vacuum metallurgy and surface engineering conference >Effects of slow shot speed of SSS die casting on microstructure and mechanical properties of aluminum alloys ADC12
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Effects of slow shot speed of SSS die casting on microstructure and mechanical properties of aluminum alloys ADC12

机译：SSS压铸缓慢速度对铝合金微观结构和力学性能的影响

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摘要

Effects of low shot speed on microstructure and mechanical properties of ADC12 aluminum alloy in the super-slow-speed(SSS) die casting process are investigated by utilizing a simple circular tensile testing specimen in order to optimize the SSS die casting process and parameters. Optical microscope, SEM, X-ray diffusion and energy spectrum are taken as the tools to measure the microstructure and mechanical properties of this material. Compared with two kinds of die castings under both producing conditions of different low-shot speed at the same start position of high-speed injection stage and different start position of high-speed injection stage at the same low-shot speed, it is found that the effect of low shot speed on casting density in the die casting process of the SSS is not obvious. It is also found a-Al dendrites of these castings become coarser and their mechanical properties are worse with the increase of low-speed speed at the same start position of high-speed injection stage. Results show that the optimized value of the start position exists at the same low-speed speed, and a-Al dendrites of the castings are smaller and their mechanical properties are better at the start position of 260mm.
机译：利用简单的圆形拉伸检测试样研究了低慢速（SSS）压铸工艺中ADC12铝合金微观结构和机械性能的影响，以优化SSS压铸工艺和参数。光学显微镜，SEM，X射线扩散和能谱作为测量该材料的微观结构和机械性能的工具。与两种模压铸件相比，在高速注射阶段的相同启动位置的不同低射频速度的生产条件下，以及在相同的低射频速度下的高速注射级的不同启动位置，发现低射频对SSS压铸过程中铸密密度的影响并不明显。它还发现，这些铸件的A-Al树枝状体变得粗糙，并且它们的机械性能与高速注射级相同起始位置的低速速度的增加更差。结果表明，起动位置的优化值以相同的低速速度存在，铸件的A-Al树枝状体较小，其机械性能在260mm的起点位置更好。

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