Effects of Stress-relieving Heat Treatment on the Brittle Fracture Initiation in Welded Structures

Autor:	Fusao Koshiga, Jinkichi Tanaka, Yoshiyuki Kurita
Rok vydání:	1971
Předmět:	Yield (engineering) Materials science Fracture toughness law Metallurgy Ultimate tensile strength technology industry and agriculture Fracture (geology) Charpy impact test Fracture mechanics Welding Pressure vessel law.invention
Zdroj:	Journal of the Society of Naval Architects of Japan. 1971:267-276
ISSN:	1884-2070 0514-8499
Popis:	Effects of stress-relieving heat treatment on brittle fracture initiation in welded structures are quantitatively discussed in terms of fracture mechanics. The basic concept employed for discussion is that brittle fracture should initiate when tensile yield zone formed ahead of a pre-existing crack attains a critical size depending on the material.The critical zone size as a function of temperature is predictable from Charpy-V transition temperature. Metallurgical information on welding residual stress and Charpy-V data for various conditions of heat treatment is compiled and put into the proposed logical frame of fracture mechanics.There is a divergence of conclusion for every case of steel type. Cases studied are those of an ordinary mild steel, two kinds of quenched-and-tempered high strength steels and a Mn-Mo steel for nuclear pressure vessels.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a04bfcc7c3c5558a37b33b96340e4499 https://doi.org/10.2534/jjasnaoe1968.1971.267 Zobrazit plný text záznamu