A parameter for characterizing thermal aging effect on fracture toughness of GTAW of 316L stainless steel. (November 2020)

• Record Type: Journal Article
• Authors: Youn, Gyo-Geun; Kim, Yun-Jae; Miura, Yasufumi
• Is Part Of: Engineering fracture mechanics. Volume 239(2020)
• Publication Date: 2020-11
• Subjects: Thermal aging constant -- Fracture toughness prediction -- Thermal aging effect -- Multi-axial fracture strain model -- GTAW 316L stainless steel; Fracture mechanics -- Periodicals; Rupture, Mécanique de la -- Périodiques; Fracture mechanics; Periodicals; 620.112605
• DOI: 10.1016/j.engfracmech.2020.107318
• Languages: English
• ISSNs: 0013-7944

Abstract

Highlights: A fracture toughness prediction model using the thermal aging constant is proposed. The aging constant is determined from the tensile data of aged GTAW of 316L. A simple equation is proposed to predict fracture toughness of aged GTAW. The predicted results agree well with experimental toughness data of aged GTAW. Abstract: In this paper, the authors propose a model based on the thermal aging constant to predict the fracture toughness of aged gas-tungsten-arc-welded 316L stainless steel (referred to as GTAW hereinafter). The constant can be determined simply from the tensile data of aged GTAW, and a closed-form expression for this is given. The fracture toughness of aged GTAW can be predicted based on the product of the thermal aging constant with the toughness of unaged GTAW. The predicted toughness agrees well with the experimental data of aged GTAW.