• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Neutron Diffraction Analysis of Residual Strain in High-Pressure Die Cast A383 Engine Blocks
【24h】

Neutron Diffraction Analysis of Residual Strain in High-Pressure Die Cast A383 Engine Blocks

机译：高压模铸A383发动机块中残余应变的中子衍射分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The residual strains in three high-pressure die cast A383 engine blocks were measured using neutron diffraction. Residual strains and stresses can be generated during high-pressure die casting process due to high thermal gradients and may cause fatigue failure or dimensional distortion. Neutron diffraction can measure the residual strain distributions deep inside castings with complex geometries, because neutrons can penetrate substantially more material than x-rays. In the present work, the residual strains (in the axial and hoop directions) along the whole cylinder bridge of high-pressure die cast A383 engine blocks in as-cast and heat-treated conditions were measured by neutron diffraction methods. The effect of heat treatment on the distribution and magnitude of residual strains was also investigated. The results indicate that the residual strain in the cylinder bridge is tensile in both the axial and hoop components for both the as-cast and the heat-treated engine blocks. The residual strain in the hoop direction is bigger in magnitude than the residual strain in the axial direction. Heat treatment significantly relaxes the residual strain in the axial direction but only slightly relaxes the residual strain in the hoop direction.
机译：使用中子衍射测量三个高压模铸A383发动机块中的残余菌株。由于高热梯度，在高压压铸过程中可以产生残留菌株和应力，并且可能导致疲劳失效或尺寸失真。中子衍射可以测量具有复杂几何形状的铸件深的残余应变分布，因为中子可以比X射线渗透到大量材料。在本作工作中，通过中子衍射方法测量沿着浇铸和热处理条件的高压模铸A383发动机块的整个气缸桥的残余菌株（轴向和箍方向）。还研究了热处理对残留菌株分布和幅度的影响。结果表明，汽缸桥中的残余应变在作为铸造和热处理的发动机块中的轴向和环箍部件中的拉伸。箍方向上的残余应变大小比轴向的残余应变更大。热处理显着放松轴向上的残余应变，但仅略微松弛箍方向上的残余应变。

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