Structural variations in heat treated low alloy steel forgings

A study has been made of the microstructures of two low alloy Cr–Mo–Ni–V steel forgings in the quenched and tempered condition. Optical metallography of variously etched specimens, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) and X-ray diffraction were used to charac...

Full description

Saved in:
Bibliographic Details
Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 380; no. 1; pp. 79 - 92
Main Authors Maropoulos, S, Ridley, N, Karagiannis, S
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.08.2004
Subjects
Carbides
Grain boundaries
Microstructure
Steel
Tempered martensite
Grain boundaries
Tempered martensite
Steel
Microstructure
Carbides
Online AccessGet full text

Cover

More Information
Summary:A study has been made of the microstructures of two low alloy Cr–Mo–Ni–V steel forgings in the quenched and tempered condition. Optical metallography of variously etched specimens, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) and X-ray diffraction were used to characterize the tempered martensite microstructures. Variations in prior austenite grain size and martensite lath structure have been related to the observed different carbide distributions. These arise from small differences in composition, mainly vanadium content, and the consequent response to heat treatment. The metallographic results can account for the differences in tensile and fracture toughness properties observed between the two materials as well as between the two ends of the same forging.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2004.03.053