...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Welding Research Council Bulletin >Fracture toughness master curve development: fracture toughness of ferritic steels and ASTM reference temperature (T{sub}0)
【24h】

Fracture toughness master curve development: fracture toughness of ferritic steels and ASTM reference temperature (T{sub}0)

机译：断裂韧性主曲线的发展：铁素体钢的断裂韧性和ASTM参考温度（T {sub} 0）

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The ASTM Committee on Fatigue and Fracture has developed a new standard entitled "Test method for the determination of a reference temperature, T{sub}0, for ferritic steels in the transition range." This method defines the procedure for obtaining a T{sub}0 and a "Master Curve" which describes the fracture toughness of a ferritic material in the brittle-to-ductile transition temperature range. A three-phase project was initiated by the Committee on Failure Modes of Pressure Vessel Research Council (PVRC). The results from the first two phases of this project are presented in this report. The objectives of these work phases are; 1) to verify the Master Curve approach for pressure vessel steels, 2) to develop a database which can be used in the future development of ASME Boiler and Pressure Vessel Code procedures which make use of T{sub}0 or the Master Curve approach, and 3) to use the data to develop and verify an ASME Code Case. These objectives have been accomplished. It was desired to obtain a large database of fracture toughness data on ferritic pressure vessel steels. This database could be used to further verify the reference temperature, T{sub}0, and Master Curve procedures and also be used in the development of an alternative fracture toughness method for incorporation into the ASME Boiler and Pressure Vessel Code. To accomplish these objectives, a total of twenty four fracture toughness data sets in the brittle-to-ductile transition range were collected. The reference temperature, T{sub}0, and Master Curve were determined for each heat of material investigated. This paper presents the finding from these data set analyses, especially those sets that have large number of data points. The data are presented with a median, and 5%/95% tolerance bound master curves. It is concluded that the Master Curve method applies to all the data sets of ferritic steels for pressure vessel materials in this study. A proposed ASME Code Case is presented which uses the current K{sub}(IC) curve, but is shifted using an equivalent RT{sub}(NDT) which is based on fracture toughness based reference temperature (T{sub}0) rather than the RT{sub}(NDT) temperature.
机译：ASTM疲劳与断裂委员会开发了一个新的标准，名为“用于确定过渡范围内铁素体钢参考温度T {sub} 0的测试方法”。该方法定义了获得T {sub} 0和“主曲线”的过程，该曲线描述了铁素体材料在脆性至延性转变温度范围内的断裂韧性。压力容器研究理事会故障模式委员会（PVRC）启动了一个分为三个阶段的项目。本项目前两个阶段的结果在本报告中介绍。这些工作阶段的目标是： 1）验证压力容器钢的Master Curve方法，2）开发一个数据库，该数据库可用于将来使用T {sub} 0或Master Curve方法的ASME锅炉和压力容器规范程序，和3）使用数据开发和验证ASME规范案例。这些目标已经实现。期望获得铁素体压力容器钢的断裂韧性数据的大型数据库。该数据库可用于进一步验证参考温度T {sub} 0和主曲线程序，也可用于开发替代断裂韧性方法以结合到ASME锅炉和压力容器规范中。为了实现这些目标，在脆性-延性转变范围内收集了总共二十四个断裂韧性数据集。对于所研究材料的每种热量，确定参考温度T {sub} 0和主曲线。本文介绍了从这些数据集分析中得出的发现，尤其是那些具有大量数据点的数据集。数据以中位数和5％/ 95％公差范围的主曲线表示。结论是，本研究中的主曲线法适用于压力容器材料的所有铁素体钢数据集。提出了一种建议的ASME代码案例，该案例使用了当前的K {sub}（IC）曲线，但使用了基于等效断裂温度（T {sub} 0）的等效RT {sub}（NDT）进行平移高于RT {sub}（NDT）温度。

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