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首页> 外文学位 >Prediction of residual stress and distortion from residual stress in heat treated and machined aluminum parts.
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Prediction of residual stress and distortion from residual stress in heat treated and machined aluminum parts.

机译：通过热处理和机械加工的铝制零件预测残余应力和残余应力引起的变形。

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摘要

Parts machined from relatively large thickness cross sections can experience significant deformations from high residual stresses that develop in the part during the heat treatment used to form the aluminum alloy. Uphill quenching is a process that can create a part with low residual stress and stable dimensions when the process is controlled properly. The uphill quenching process involves a solution heat treat, quench, cool to liquid nitrogen, steam blast, and then age to final temper.;In this thesis two parts were modeled using ANSYS. The first part underwent the uphill quench process in the rough machined state. The second part was modeled in the stock material shape and only underwent a solution heat treat, quench, and age to final temper. After the residual stress in the second part was predicted the excess material was removed by killing the associated elements and the deformation of the final machined part was predicted. For both parts analyzed measurements were made and compared against predictions with fairly good results.
机译：由相对较大的厚度横截面加工而成的零件可能会因在用于形成铝合金的热处理过程中零件中产生的高残余应力而产生明显的变形。上坡淬火是一种工艺，只要对其进行适当的控制，就可以制造出具有较低残余应力和稳定尺寸的零件。上坡淬火过程涉及固溶热处理，淬火，冷却至液氮，蒸汽鼓风，然后进行时效至最终回火。第一部分在粗加工状态下进行了上坡淬火工艺。第二部分以坯料形状建模，仅经过固溶热处理，淬火和时效至最终回火。在预测了第二部分中的残余应力之后，通过杀死相关元素来去除多余的材料，并预测最终加工部分的变形。对于这两个部分，都进行了测量，并将其与预测结果进行比较，结果相当不错。

著录项

  • 作者

    Jones, Robert.;

  • 作者单位

    San Jose State University.;

  • 授予单位 San Jose State University.;
  • 学科 Engineering Mechanical.;Design and Decorative Arts.;Engineering Aerospace.
  • 学位 M.S.
  • 年度 2014
  • 页码 59 p.
  • 总页数 59
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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