• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Effect of phase stability and segregation on the corrosion properties of Alloy-22 (UNS NO6022) in base metal and weldments.
【24h】

Effect of phase stability and segregation on the corrosion properties of Alloy-22 (UNS NO6022) in base metal and weldments.

机译：相稳定性和偏析对合金22（UNS NO6022）在贱金属和焊件中的腐蚀性能的影响。

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

Alloy-22 (UNS NO6022) is being investigated for use as a corrosion resistant outer barrier in a two-layered nuclear waste package container, for use at the designated nuclear waste repository site in Yucca Mountain in Nevada (USA). The main mode of corrosion that may occur at the repository site was examined here. Alloy-22 (C-22) is said to be a versatile nickel-chromium-molybdenum-tungsten alloy with exceptional corrosion resistance amongst other Ni-Cr-Mo alloys available today. It is claimed that C-22 alloy has outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Intergranular corrosion and exposure of Alloy-22 to moderately elevated temperatures may potentially lead to diminished corrosion resistance-an issue that we examine here. The intergranular corrosion resistance of Alloy-22 after various heat treatments on both mill annealed and welded samples was studied using ASTM G28 tests. We attempted to corroborate these results using suitable methods such as double-loop electrochemical potentiokinetic reactivation (EPR) tests, as well as material characterization techniques including optical microscopy, scanning electron microscopy (SEM), and energy dispersive spectrometry (EDS). The samples were tested using electrochemical potentiokinetic reactivation (EPR) tests in solutions that were developed specifically so as to check for chromium and molybdenum depletion.
机译：正在研究Alloy-22（UNS NO6022）用作两层核废料包装容器中的耐腐蚀外层屏障，以用于美国内华达州尤卡山的指定核废料储存场。在此检查了可能发生在储存库现场的主要腐蚀方式。合金22（C-22）被认为是一种多用途的镍铬钼钨合金，在当今可获得的其他镍铬钼合金中具有出色的耐腐蚀性。据称，C-22合金具有出色的抗点蚀，缝隙腐蚀和应力腐蚀开裂的能力。晶间腐蚀和Alloy-22暴露于适度的高温下可能会导致耐蚀性降低，这是我们在此要研究的问题。使用ASTM G28测试研究了在经过退火处理和焊接后的样品上经过各种热处理后的Alloy-22的耐晶间腐蚀性。我们试图使用合适的方法（例如双环电化学电位动力学再活化（EPR）测试）以及材料表征技术（包括光学显微镜，扫描电子显微镜（SEM）和能量色散光谱（EDS））来证实这些结果。在专门开发的溶液中使用电化学电位动力学活化（EPR）测试来测试样品，以检查铬和钼的消耗。

著录项

  • 作者

    Vadwlas, Shatrugna.;

  • 作者单位

    University of Nevada, Reno.;

  • 授予单位 University of Nevada, Reno.;
  • 学科 Engineering Metallurgy.
  • 学位 M.S.
  • 年度 2007
  • 页码 144 p.
  • 总页数 144
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 冶金工业;
  • 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