Title of article :
On low temperature bainite transformation characteristics using in-situ neutron diffraction and atom probe tomography
Author/Authors :
Rakha، نويسنده , , Khushboo and Beladi، نويسنده , , Hossein and Timokhina، نويسنده , , Ilana and Xiong، نويسنده , , Xiangyuan and Kabra، نويسنده , , Saurabh and Liss، نويسنده , , Klaus-Dieter and Hodgson، نويسنده , , Peter، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
7
From page :
303
To page :
309
Abstract :
In-situ neutron diffraction was employed to monitor the evolution of nano-bainitic ferrite during low temperature isothermal heat treatment of austenite. The first 10 peaks (austenite, γ and ferrite, α) were monitored during austenization, homogenisation, rapid cooling and isothermal holding at 573 K. Changes in the α-110 and γ-111 peaks were analysed to determine the volume fraction changes and hence the kinetics of the phase transformation. Asymmetry and broadening in the α-200 and γ-200 peaks were quantified to lattice parameter changes due to carbon redistribution as well as the effects of size and dislocation density. Atom Probe Tomography was then used to confirm that, despite the presence of 1.5 mass% Si, carbide formation was evident. This carbide formation is the cause of poor ductility, which is lower than expected in such steels.
Keywords :
Atom probe tomography , bainite , Phase transformation , Neutron diffraction
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Serial Year :
2014
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Record number :
2174452
Link To Document :
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