Effect of deep cryogenic processing on tensile toughness of 45WCrV7 steel

What is it about?

Toughness is an important property for being used in steels in engineering applications. In this research, tensile toughness of 45WCrV7 steel was measured and calculated in 10 different processing conditions. The results of tensile test showed that two samples had maximum tensile toughness. Microstructure studies demonstrated that the required condition for high tensile toughness was simultaneous increase in two microstructure factors named content and population density of the secondary carbides because a matrix which was poor of carbon and alloying elements was softened and thus increased total tensile toughness.

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Why is it important?

High tensile toughness obtained by simultaneous increase in two microstructure factors