The influence of microstructure on fracture toughness of undermatched weld metal

被引：0
|
作者：
Praunseis, Z [1 ]
机构：
[1] Univ Maribor, Fac Mech Engn, SLO-2000 Maribor, Slovenia
来源：
KOVOVE MATERIALY-METALLIC MATERIALS | 1999年 / 37卷 / 04期
关键词：
crack-tip opening displacement (CTOD); CTOD fracture toughness testing; CTOD-R resistance curve; welded joints;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A set of B x B specimens was taken from homogeneous and heterogeneous welds and tested to obtain fracture behaviour of undermatched welded joints. The critical crack-tip opening displacement (CTOD), as the relevant parameter for safe service of welded structure, was used to evaluate the influence of microstructures. Surface cracks of different depths were positioned in weld metal with fatigue-crack tip front in different microstructures. It was shown that selection of soft weld consumable (wire) does not guarantee tough root layer in the undermatched weld.
引用
收藏
页码：266 / 279
页数：14
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