Study on the Formation of Ferrite-Cementite Microstructure by Strain Induced Dynamic Transformation in Medium Carbon Steels

Lee, You Hwan; Kwon, Jeong Seok; Lee, Duk Lak

doi:10.4028/0-87849-428-6.4267

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2018

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“…They dealt with ferrite and pearlite microstructural steel. Authors in [5] studied the parameters of rolling and cooling and their impact on microstructure and mechanical properties on different CHQ steels. They observed that the mechanical properties can be enhanced by refinement of ferrite-pearlite grains.…”

Section: Introductionmentioning

confidence: 99%

Influence of Austenite Phase Transformation on Existing Microstructure of Low C-Mn Steel

Abro

Chandio

Jamali

et al. 2018

Eng. Technol. Appl. Sci. Res.

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Cold heading quality CHQ steel is widely used for making small components due to its excellent cold heading response. Austenite nucleation and growth morphology of a commercial CHQ steel has been studied by continuous heating experiments using lead-bath up-quenching at different heating temperatures. Modern optical microscope Olympus GX51, scanning electron microscopy techniques have been deployed to reveal and interpret the microstructure. It was found that at 740°C the microstructure shows lack of homogeneity, hence the cold-head-ability of CHQ steel is anisotropic. At high temperatures, in austenite domain, at 60sec, the resultant austenite is highly homogenous. Then the cold-head-ability properties of CHQ steel turned to be isotropic.

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Section: Introductionmentioning

confidence: 99%