ISO 15653:2010 Metallic materials — Method of test for the determination of quasistatic fracture toughness of welds

金属材料——焊缝准静态断裂韧性测定的试验方法

基本信息

标准号
ISO 15653:2010
标准状态
废止
发布单位或类别
国际组织-国际标准化组织(IX-ISO);
发布日期
-
实施日期
-
废止日期
-
CCS分类
-
ICS分类
25.160.40 焊接、钎焊和低温焊 - 焊接接头

研制信息

起草单位
- 展开▼
起草人
-
归口单位
ISO/TC 164/SC 4

摘要

ISO 15653:2010 specifies methods for determining fracture toughness in terms of K (stress intensity factor), δ (crack tip opening displacement, CTOD) and J (experimental equivalent of the J?integral) for welds in metallic materials.ISO 15653 is complementary to ISO 12135, which covers all aspects of fracture toughness testing of parent metal and which needs to be used in conjunction with this document. It describes methods for determining point values of fracture toughness. It should not be considered a way of obtaining a valid R?curve (resistance-to-crack-extension curve). However, the specimen preparation methods described in ISO 15653 could be usefully employed when determining R?curves for welds. The methods use fatigue precracked specimens which have been notched, after welding, in a specific target area in the weld. Methods are described to evaluate the suitability of a weld for notch placement within the target area, which is either within the weld metal or within the weld heat-affected zone (HAZ), and then, where appropriate, to evaluate the effectiveness of the fatigue crack in sampling these areas. ISO 15653:2010规定了根据金属材料焊缝的K(应力强度因子)、δ(裂纹尖端张开位移,CTOD)和J(试验等效的J积分)确定断裂韧性的方法。ISO 15653是对ISO 12135的补充,ISO 12135涵盖了母材断裂韧性测试的所有方面,需要与本文件一起使用。它描述了确定断裂韧性点值的方法。不应将其视为获得有效R曲线(阻力)的方法-裂纹扩展曲线)。然而,在确定焊缝的R曲线时,可以使用ISO 15653中描述的试样制备方法。这些方法使用的是焊接后在焊缝特定目标区域开槽的疲劳预裂纹试样。描述了评估目标区域内缺口放置焊缝的适用性的方法,该目标区域位于焊缝金属内或焊缝热影响区(HAZ)内,然后,在适当的情况下,评估在这些区域取样时疲劳裂纹的有效性。 展开▼

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