Influence of Two-Step Austempering Process on the Fracture Toughness of a Low Carbon Low Alloy (LCLA) Steel

Susil K. Putatunda; Codrick Martis

doi:10.4028/www.scientific.net/MSF.706-709.2259

Paper Titles

Austenite Stabilization by Quenching and Partitioning in a Low-Alloy Medium Carbon Steel
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Recrystallization Behaviour of Nb and Ti+Nb Added Ferritic Stainless Steels
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Effect of Interpass Temperature on Microstructure and Mechanical Properties of Weld Metal of 690 MPa HSLA Steel
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Study of the Hydrogen Traps in a High Strength TRIP Steel by Thermal Desorption Spectroscopy
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Influence of Two-Step Austempering Process on the Fracture Toughness of a Low Carbon Low Alloy (LCLA) Steel
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Study on the Microstructure and Mechanical Properties of a High Strength Crack-Free Steel
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Microstructure, Mechanical Properties and Formability of a Duplex Steel
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Potential of Hot Rolled Dualphase Steel from Compact Strip Production CSP^® in Automotive Applications
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New Constitutive Analysis of Microstructural Evolution: Hot Compression of Gamma Iron
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Influence of Two-Step Austempering Process on the Fracture Toughness of a Low Carbon Low Alloy (LCLA) Steel

Abstract:

In this investigation a new low carbon and low alloy (LCLA) (Third generation AHSS) steel with exceptional combination of yield strength and fracture toughness has been developed. The steel has been processed using a novel two step austempering process. The investigation also examined the influence of a two-step austempering process on the microstructure and mechanical properties of this steel. Test results show that by two-step austempering process significant improvement in yield strength and fracture toughness can be obtained in this steel.