首页> 外文会议>International Conference on Recent Advances in Automotive Engineering and Mobility Research >Microstructure Evolution and Mechanical Properties of Rheocast A319 Aluminum Alloy Using Cooling Slope
【24h】

Microstructure Evolution and Mechanical Properties of Rheocast A319 Aluminum Alloy Using Cooling Slope

机译:用冷却斜率的籽腔A319铝合金的微观结构演化与力学性能

获取原文

摘要

A319 aluminum alloys are commonly used in automotive industry due to a combination of good fluidity and mechanical strength. In this present work, cooling slope (CS) rheocasting process was employed to produce A319 billets with near spherical morphology of primary Al phase. The dendritic primary phase in the cast A319 alloy had readily transformed into non-dendritic when the ingots were cast over a cooling plate from pouring temperatures between 620°C and 640°C and with cooling lengths of between 300 mm and 400 mm. The shear driven flow of the solidifying melt on the cooling slope wall promotes heterogeneous nucleation of α-Al phase and subsequent separation from there due to shear driven flow of the solidifying melt produced nearly spheroidal morphology of the primary phase in the microstructure. The results show that the best combination of pouring temperature and cooling length was found to be 630°C and 400 mm respectively. The hardness of the rheocast ingots improved to 85.3 HV from 81.8 HV in as-cast condition.
机译:由于良好的流动性和机械强度,A319铝合金通常用于汽车工业。在本作品中,使用冷却斜率(CS)流析方法以产生A319坯料,近代Al相的近球形形态。当铸锭浇注在冷却板上浇注在620℃和640℃之间时,铸造A319合金中的树突初级相易于转化为非树枝状,并且冷却长度在300mm和400mm之间。冷却斜面上的固化熔体的剪切驱动流动促进了α-Al相的异质成核,随后由于剪切驱动的熔体流动的凝固熔体的分离而产生的微观结构中的初级相的几乎球形形态。结果表明,浇注温度和冷却长度的最佳组合分别为630°C和400毫米。 rheocast锭的硬度在81.8HV中提高到81.8HV的浇铸状况。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号