• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Fatigue >Effect of volume fraction of phases and precipitates on the mechanical behavior of UNS S31803 duplex stainless steel
【24h】

Effect of volume fraction of phases and precipitates on the mechanical behavior of UNS S31803 duplex stainless steel

机译：相和沉淀的体积分数对UNS S31803双相不锈钢力学性能的影响

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

Mechanical properties of a grade UNS S31803 duplex stainless steel were studied. Samples were annealed at three different temperatures, 1060 ℃, 1200 ℃, and 1300 ℃, to change the α/γ proportion, to precipitate undesirable phases (for example, at, a and chromium nitrides), and to study the effect of the micro-structure on the mechanical behavior. Specimens with a thickness of 1.8 mm were prepared according to ASTM standards and tested at room temperature. Tensile tests were conducted using displacement control at a rate of 5 mm/min. Force-controlled constant amplitude axial fatigue tests were conducted at a frequency of 30 Hz and an R stress ratio of 0.1. Microstructural analyses, performed by optical microscopy and scanning electron microscopy, showed the following modifications to the microstructure: changes in the phase volume fractions, the phase grain growths, and the morphology of the y-phase and the precipitation of chromium nitrides in the α-phase. The mechanical properties of the steel were significantly changed due to the changed microstructure. The results demonstrate the sensitivity of the steel to the annealing temperature.
机译：研究了UNS S31803级双相不锈钢的机械性能。样品在1060℃，1200℃和1300℃这三种不同温度下进行退火，以改变α/γ比例，沉淀出不希望的相（例如，在α和Cr氮化物上），并研究微量元素的影响。结构对机械性能的影响。根据ASTM标准制备厚度为1.8毫米的样品，并在室温下进行测试。使用位移控制以5 mm / min的速度进行拉伸测试。在30 Hz的频率和0.1的R应力比下进行力控制的恒定振幅轴向疲劳测试。通过光学显微镜和扫描电子显微镜进行的显微结构分析表明，对显微结构进行了以下修改：相体积分数的变化，相晶粒的生长以及y相的形态和α-中铬氮化物的沉淀。相。由于改变了显微组织，钢的机械性能发生了显着变化。结果证明了钢对退火温度的敏感性。

著录项

  • 来源
    《International Journal of Fatigue》 |2015年第5期|81-87|共7页
  • 作者

    J.C.de Lacerda; L.C.Candido; L.B. Godefroid;

  • 作者单位

    REDEMAT, Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, MG, Brazil,Universidade Federal de Itajuba - Campus ltabira, 35900-000 Itabira, MG, Brazil;

    REDEMAT, Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, MG, Brazil;

    REDEMAT, Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, MG, Brazil;

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

    Duplex stainless steel; Microstructure; Tensile and fatigue tests;

    机译：双相不锈钢;微观结构拉伸和疲劳测试;

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