• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ASME international manufacturing science and engineering conference 2011 >FLOW STRESS EXPERIMENTAL DETERMINATION FOR WARM-FORMING PROCESS
【24h】

FLOW STRESS EXPERIMENTAL DETERMINATION FOR WARM-FORMING PROCESS

机译：形成过程的流变应力实验测定

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

Warm forming is a manufacturing process in which a workpiece is formed into a desired shape at a temperature range between room temperature and material recrystallization temperature. Flow stress is expressed as a function of the strain, strain rate, and temperature. Based on such information, engineers can predict deformation behavior of material in the process. The majority of existing studies on flow stress mainly focus on the deformation and microstructure of alloys at temperature higher than their recrystallization temperatures or at room temperature. Not much works have been presented on flow stress at warm-forming temperatures. This study aimed to determine the flow stress of stainless steel AISI 316L and titanium TA2 using specially modified equipment. Comparing with the conventional method, the equipment developed for uniaxial compression tests has be verified to be an economical and feasible solution to accurately obtain flow stress data at warm-forming temperatures. With average strain rates of 0.01, 0.1, and 1 /s, the stainless steel was tested at degree 600, 650, 700, 750, and 800 ℃ and the titanium was tested at 500, 550, 600, 650, and 700 ℃. Both materials softened at increasing temperatures. The overall flow stress of stainless steel was approximately 40 % more sensitive to the temperature compared to that of titanium. In order to increase the efficiency of forming process, it was suggested that the stainless steel should be formed at a higher warm-forming temperature, i.e. 800 ℃. These findings are a practical reference that enables the industry to evaluate various process conditions in warm-forming without going through expensive and time consuming tests.
机译：温热成形是其中在室温和材料再结晶温度之间的温度范围内将工件成形为期望形状的制造过程。流应力表示为应变，应变速率和温度的函数。基于这些信息，工程师可以预测过程中材料的变形行为。现有的大多数流变应力研究主要集中在高于重结晶温度或室温的合金的变形和微观结构上。关于热成形温度下的流动应力，目前还没有太多的研究。这项研究旨在使用经过特殊改进的设备确定AISI 316L不锈钢和TA2钛的流动应力。与传统方法相比，用于单轴压缩测试的设备已被证明是经济，可行的解决方案，可在热成型温度下准确获得流动应力数据。在0.01、0.1和1 / s的平均应变速率下，不锈钢分别在600、650、700、750和800℃下进行测试，钛在500、550、600、650和700℃下进行测试。两种材料都在升高的温度下软化。与钛相比，不锈钢的总流动应力对温度的敏感性高出约40％。为了提高成形过程的效率，建议不锈钢应在较高的热成形温度（即800℃）下成形。这些发现是实用的参考，使行业能够评估热成型中的各种工艺条件，而无需进行昂贵且耗时的测试。

著录项

  • 来源
  • 会议地点 Corvallis OR(US);Corvallis OR(US)
  • 作者

    Ting Fai Kong; Luen Chow Chan; Tai Chiu Lee;

  • 作者单位

    Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R., People's Republic of China;

    Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R., People's Republic of China;

    Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong S.A.R., People's Republic of China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械制造工艺;
  • 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