A comparative study into the fracture toughness properties of duplex stainless steels

被引：9

作者：

Afzali, Nariman ^{[1
]}

Jabour, Georjina ^{[1
]}

Stranghoener, Natalie ^{[1
]}

Langenberg, Peter ^{[2
]}

机构：

[1] Univ Duisburg Essen, Inst Met & Lightweight Struct, Univ Str 15, D-45141 Essen, Germany

[2] IWT Solut AG, Mozartstr 2a, D-52064 Aachen, Germany

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2024年 / 212卷

关键词：

Duplex stainless steel; Fracture toughness; Weldment; SENB fracture toughness; Charpy-V impact toughness; MECHANICAL-PROPERTIES;

D O I：

10.1016/j.jcsr.2023.108283

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Beside their high mechanical strength, duplex stainless steels are a suitable choice in highly corrosive environments. These types of steels are used in steel bridges more and more frequently exposed to low temperatures and fatigue loads. However, for low temperature applications, it must be guaranteed that brittle fracture is avoided since duplex stainless steel shows a toughness-temperature relationship similar to that of carbon steel. For this reason, in the frame of the German national FOSTA research project "P 1390", comprehensive investigations have been started into the material selection of duplex stainless steel to avoid brittle fracture considering the fracture mechanic based background of EN 1993-1-10. For this purpose, Charpy-V impact tests and fracture toughness tests have been systematically carried out for various duplex stainless steels in order to create the basis for the development of toughness requirements for new duplex classes. The validity of the already existing Master Curve concept and the applicability of the transition temperature correlation for duplex stainless steels based on experimental fracture toughness and Charpy-V impact tests have been investigated. The aim of this contribution is to present first results of these investigations.

引用

页数：9

共 39 条

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