Experience with compact tension specimens for creep crack growth measurements in weldments

被引：0

作者：

Taylor, NG ^{[1
]}

Rantala, JH ^{[1
]}

Hurst, RC ^{[1
]}

Bregani, F ^{[1
]}

机构：

[1] Inst Adv Mat, JRC, EC, Petten, Netherlands

来源：

ECF 12: FRACTURE FROM DEFECTS, VOLS. I-III | 1998年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Creep crack growth tests have been performed on CT specimens machined from weldments in 1/2Cr1/2Mo1/4V, P22 and P91 pipe sections. The test set-up and conditions need to be carefully considered to produce service representative damage. The pre-crack is best located in the specific HAZ sub-region of interest. As with conventional cross-weld creep testing of ferritic welds, temperature acceleration may be required if service-like damage is to be generated in short-term tests. Checks on the correpsondence between the experimental and theoretical values of C* demonstrate that consideration of primary creep and process zone transition times can be more important than HAZ creep properties variations.

引用

页码：351 / 356

页数：6