The influence of soft root on fracture behaviors of high-strength, low-alloyed (HSLA) steel weldments

被引：11
|
作者：
Praunseis, Z
Sundararajan, T
Toyoda, M
Ohata, M
机构：
[1] Univ Maribor, Fac Mech Engn, SLO-2000 Maribor, Slovenia
[2] Univ Madras, Dept Analyt Chem, Chennai 600025, India
[3] Osaka Univ, Fac Engn, Osaka 565087, Japan
来源：
MATERIALS AND MANUFACTURING PROCESSES | 2001年 / 16卷 / 02期
基金：
日本学术振兴会;
关键词：
crack growth; crack tip opening displacement (CTOD); CTOD fracture toughness testing; CTOD-R resistance curve; DC potential drop technique; direct CTOD measuring; fatigue precracking; fluxo cored arc welding process; heat-affected zone; high-strength; low-alloyed steel (HSLA); round tensile specimens; stepwise high ratio method procedure; single-edged; notched bend specimen; soft root layer; strength mismatch factor; undermatched welded joints;
D O I：
10.1081/AMP-100104303
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The presence of different microstructures along the precrack fatigue front has an important effect on the critical crack tip opening displacement (CTOD). This value is the relevant parameter for safe service of a welded structure. For a specimen with a through-thickness notch partly in the weld metal, partly in the heat-affected zone, and partly in the base material (i.e., using the composite-notched specimen). fracture behavior strongly depends on the proportion of ductile base material, size, and distribution of the mismatching factor along the vicinity of the crack front.
引用
收藏
页码：229 / 244
页数：16
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