Mixed-mode thermal fracture of AISI 304 stainless steel with temperature-dependent material properties

• Autorzy: Rajabi M. , Soltani N.
• Języki publikacji: EN

Abstrakty

EN

Mixed-mode thermal fracture of cracked AISI 304 austenitic stainless steel layers under severe thermal gradients of cryogenic and elevated temperatures is studied. Taking into account the variation of thermo-mechanical properties with temperature, the Jk-integral method, incorporating temperature-dependent material properties, is used to determine mixed-mode stress intensity factors from the results of finite element (FE) analysis. Effects of the convection heat transfer coefficient and the temperature of the contacting fluid on the mixed-mode fracture of the steel layers are investigated and it is shown that the mixed-mode stress intensity factors increase nonlinearly with these parameters. Results indicate that for accurate determination of crack tip fracture parameters when severe thermal gradients are present in the material, it is necessary to consider the variation of thermo-mechanical properties with temperature.

Słowa kluczowe

EN

temperature-dependent material properties; stress intensity factor; thermal fracture; cryogenic temperature; AISI 304 austenitic stainless steel

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2016
• Tom: Vol. 68, nr 4
• Strony: 309--326
• Opis fizyczny: Bibliogr. 28 poz., rys. kolor.

Twórcy

autor

Rajabi M.

• Department of Mechanical Engineering College of Engineering University of Tehran North Karegar Ave. Jalal Ale Ahmad Blvd.,Tehran, Iran

autor

Soltani N.

• Department of Mechanical Engineering College of Engineering University of Tehran North Karegar Ave. Jalal Ale Ahmad Blvd.,Tehran, Iran

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