Microstructural and Fractographic Characterization of a Thermally Embrittled Nuclear Grade Steel: Part II - Quenching and Tempering

Materials Research

José R. Tarpani¹  Maria H.p. Braz¹  Waldek W. Bose Filho¹  Dirceu Spinelli¹ 

[1] ,University of São Paulo Engineering School of São Carlos São Carlos SP ,Brazil

关键词: fractography;    fracture toughness;    microstructure;    pressure vessel steel;   

DOI  :  10.1590/S1516-14392002000300023

来源: SciELO

【 摘 要 】

A nuclear reactor pressure vessel steel was submitted to different quenching and tempering heat treatments aimed at simulating neutron irradiation damage. The obtained microstructures were mechanically tested and submitted to metallographic and fractographic survey. The relevant microstructural and fractographic aspects were employed in the interpretation of the mechanical performance of the thermally embrittled microstructures. A well defined correlation was determined between the elastic-plastic fracture toughness parameter J-integral and the Charpy impact energy, which was achieved for some of the Q&T microstructures.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License