Comparison of crack-arrest fracture toughness between low and high heat-input thick weld specimens

被引：7

作者：

An, Gyu Baek ^{[1
]}

Woo, Wanchuck ^{[2
]}

Park, Jeong Ung ^{[3
]}

Em, Vyacheslav ^{[4
]}

机构：

[1] POSCO, Tech Res Labs, Pohang 790300, South Korea

[2] Korea Atom Energy Res Inst, Div Neutron Sci, Taejon 305353, South Korea

[3] Chosun Univ, Dept Civil Engn, Gwangu 501759, South Korea

[4] NRC Kurchatov Inst, Neutron Res Dept, Moscow, Russia

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 2015年 / 194卷 / 02期

关键词：

Brittle fracture; Crack arrest; Fracture toughness; Thick steel; Welds; RESIDUAL-STRESS; PREDICTION;

D O I：

10.1007/s10704-015-0041-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Brittle crack-arrest fracture toughness was determined in low (1.5 kJ/mm) and high (53 kJ/mm) heat-input weld specimens with a large scale ( m) and thickness (50 and 80 mm). An instant impact having energy of 2.7 kJ was imposed into the full-thickness notch tip at low temperature and initiates crack propagation toward a higher temperature region where the crack stopped due to the improved fracture toughness. The relationship between the toughness and crack-arrest temperature provides the at of about 2700 and in the low and high heat-input weld specimens, respectively. This discrepancy was correlated to the grain size and Charpy impact energy of the notch region caused by the amounts of heat inputs in each weld specimen.

引用

页码：197 / 203

页数：7

共 16 条

[11]

Pugh CE, 1986, NUCL ENG DES, V96, P279

[12]

Ripling EJ, 1982, WELD RES, V3, p65s

[13]

Robertson TS, 1951, ENGINEERING, V172, P444

[14] PREDICTION AND SPECIFICATION OF CRACK ARREST PROPERTIES OF STEEL PLATE [J].