首页> 外文期刊>Journal of Materials Research >Influence of different casting processes on high cycle fatigue behavior of Mg-10Gd-3Y-0.5Zr alloy
【24h】

Influence of different casting processes on high cycle fatigue behavior of Mg-10Gd-3Y-0.5Zr alloy

机译:不同铸造工艺对Mg-10Gd-3Y-0.5Zr合金高周疲劳行为的影响

获取原文
获取原文并翻译 | 示例
           

摘要

In this present study, the influence of different casting processes on high cycle fatigue behavior of Mg-10Gd-3Y-0.5Zr magnesium alloy was investigated by using porosity-free low-pressure sand-casting (LPS) bars and gravity permanent mold casting (GPM) ingots. The results show that the fatigue properties of both LPS and GPM Mg-10Gd-3Y-0.5Zr alloy in as-cast condition are determined by Mg matrix and eutectic phase. However, the fatigue property improvement for LPS alloy by T6 heat treatment is significantly superior to that of GPM alloy. The different degree of enhancement of fatigue properties for two conditions of the alloy is related to different crack initiation mechanism. The fatigue crack of the LPS alloy initiates from the free surface of the sample, while the crack of the GPM alloy initiates from porosities or inclusions near the surface of the sample. Meanwhile, the crack of slip band has a crucial effect on the fatigue crack initiation of both as-cast and T6 conditions for LPS alloy.
机译:本研究通过无孔低压低压铸造(LPS)棒和重力永久铸模研究了不同铸造工艺对Mg-10Gd-3Y-0.5Zr镁合金高周疲劳行为的影响( GPM)锭。结果表明,LPS和GPM Mg-10Gd-3Y-0.5Zr合金在铸态时的疲劳性能是由Mg基体和共晶相决定的。但是,通过T6热处理对LPS合金的疲劳性能改善明显优于GPM合金。两种条件下合金疲劳性能的提高程度不同,其裂纹萌生机理也不同。 LPS合金的疲劳裂纹始于样品的自由表面,而GPM合金的裂纹始于样品表面附近的孔隙或夹杂物。同时,滑移带裂纹对LPS合金的铸态和T6条件的疲劳裂纹萌生都具有关键作用。

著录项

  • 来源
    《Journal of Materials Research》 |2016年第16期|2538-2548|共11页
  • 作者单位

    National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, and Shanghai Light Alloy Net Forming National Engineering Research Center Co., Ltd, Shanghai 201615, China;

    National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    Shanghai Spaceflight Precision Machinery Research Institute, Shanghai 201600, China;

    Shanghai Spaceflight Precision Machinery Research Institute, Shanghai 201600, China;

    National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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