Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints

被引：1
|
作者：
Maksimovic, Ana [1 ]
Milovic, Ljubica [2 ]
Zecevic, Bojana [1 ]
Aleksic, Vujadin [3 ]
Bekric, Dragoljub [4 ]
机构：
[1] Innovat Ctr Fac Technol & Met, Karnegijeva 4, Belgrade 11120, Serbia
[2] Univ Belgrade, Fac Technol & Met, Karnegijeva 4, Belgrade 11120, Serbia
[3] IMS Inst, Bulevar Vojvode Mis 43, Belgrade 11040, Serbia
[4] Univ Belgrade, Fac Mech Engn, Kraljice Marije 16, Belgrade 11120, Serbia
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 2024年 / 131卷
关键词：
Transition temperature; Mechanical properties; NIOMOL; 490K; Nil Ductility Transition Temperature; FRACTURE-TOUGHNESS; CONSTRAINT;
D O I：
10.1016/j.tafmec.2024.104404
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper is dedicated to the ductile -brittle transition behaviour of the microalloyed structural steel NIOMOL 490 K. This steel grade is used for welded pressure vessels subjected to dynamic loads and operating at sub -zero temperatures. Therefore, it must have an acceptable toughness. Due to its importance for the safety assessment of pressure vessels, a characterization of this steel was carried out using the Charpy V -notch impact test in the temperature range between -60 degrees C and + 60 degrees C. The notches were located in parent material, heat affected zone and weld metal. In this paper, the tensile strength properties at ambient temperature and the nil ductility temperature in the temperature range from -60 degrees C to + 60 degrees C are presented.
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页数：8
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