ZL101半固态微压缩实验研究
发布时间：2019-04-24 03:27
【摘要】：对ZL101合金进行不同温度和保温时间的重熔处理,获得不同半固态组织状态,并进行常规尺寸(Φ5 mm)和微观尺寸(Φ1 mm)试样的等温压缩实验,得到不同变形温度和保温时间下试样的流变应力曲线,通过两种尺寸的力学性能比较,获得半固态金属在尺寸微型化的过程中尺度效应的存在条件与存在形态。研究表明,ZL101铝合金在常温和高固相率条件下均存在着流动应力增加的尺度效应现象;在高固相率条件下流动应力增大的现象更加明显;增加保温温度和保温时间,固相球化率增加,可以削弱流动应力增加的尺度效应。
[Abstract]:ZL101 alloy was remelted at different temperature and holding time to obtain different semi-solid microstructure, and isothermal compression experiments were carried out on the specimens of conventional size (桅 5 mm) and micro size (桅 1 mm). The flow stress curves of samples under different deformation temperature and holding time are obtained. By comparing the mechanical properties of two sizes, the existing conditions and forms of scale effect in the process of miniaturization of semi-solid metals are obtained. The results show that the scale effect of flow stress increases in both room temperature and high solid rate of ZL101 aluminum alloy, and the increase of flow stress in high solid rate is more obvious. With the increase of holding temperature and holding time, the increase of solid spheroidization can weaken the scale effect of the increase of flow stress.
【作者单位】： 上海交通大学材料科学与工程学院塑性成形技术与装备研究院;
【基金】：国家自然科学基金资助项目(51635005)
【分类号】：TG306
[Abstract]:ZL101 alloy was remelted at different temperature and holding time to obtain different semi-solid microstructure, and isothermal compression experiments were carried out on the specimens of conventional size (桅 5 mm) and micro size (桅 1 mm). The flow stress curves of samples under different deformation temperature and holding time are obtained. By comparing the mechanical properties of two sizes, the existing conditions and forms of scale effect in the process of miniaturization of semi-solid metals are obtained. The results show that the scale effect of flow stress increases in both room temperature and high solid rate of ZL101 aluminum alloy, and the increase of flow stress in high solid rate is more obvious. With the increase of holding temperature and holding time, the increase of solid spheroidization can weaken the scale effect of the increase of flow stress.
【作者单位】： 上海交通大学材料科学与工程学院塑性成形技术与装备研究院;
【基金】：国家自然科学基金资助项目(51635005)
【分类号】：TG306
【相似文献】
相关期刊论文 前10条
1 刘仁培;董祖珏;潘永明;;6082和ZL101铝合金低熔共晶测试与分析[J];焊接学报;2005年10期
2 魏春雷;;复合稀土对ZL101合金的细化变质作用[J];南方农机;2006年03期
3 高雷雷;史志铭;张秀梅;孙腾飞;;铈变质ZL101合金的组织和力学性能研究[J];内蒙古工业大学学报(自然科学版);2008年01期
4 黄光杰;钱宝华;游红;;45钢高温拉伸峰值应力和变形储能与Z参数的关系函数研究[J];材料工程;2007年12期
5 徐勇;柳瑞清;;铝合金高温流动应力的研究[J];有色金属加工;2004年02期
6 申昱;于沪平;阮雪榆;;流动应力下降尺度效应的数值模拟[J];上海交通大学学报;2006年10期
7 周纪华,管克智,刘s，
本文编号：2464066
本文链接：https://www.wllwen.com/kejilunwen/jiagonggongyi/2464066.html
