48 citations · 78 across the 7 of their papers we have counts for
7 papers
Carbon in solution and the Charpy impact performance of medium Mn steels
TWK Kwok, FF Worsnop, JO Douglas +1
Carbon is a well known austenite stabiliser and can be used to alter the stacking fault energy and stability against martensitic transformation in medium Mn steels, producing a ran…
The mechanism of twin thickening and the elastic strain state of TWIP steel nanotwins
T W J Kwok, T P McAuliffe, A K Ackerman +4
A Twinning Induced Plasticity (TWIP) steel with a nominal composition of Fe-16.4Mn-0.9C-0.5Si-0.05Nb-0.05V was deformed to an engineering strain of 6\%. The strain around the defor…
The relative contributions of TWIP and TRIP to strength in fine grained medium-Mn steels
T W J Kwok, P Gong, R Rose +1
A medium Mn steel of composition Fe-4.8Mn-2.8Al-1.5Si-0.51C (wt.\%) was processed to obtain two different microstructures representing two different approaches in the hot rolling m…
Tailoring the Deformation Behaviour of a Medium Mn Steel through Isothermal Intercritical Annealing
X. Xu, T. W. J. Kwok, P. Gong +1
A novel concept of varying the strain hardening rate of a medium Mn steel with 8 wt\% Mn by varying the duration of the intercritical anneal after hot rolling was explored. It was…
A scale up study on chemical segregation and the effects on tensile properties in two medium Mn steel castings
T. W. J. Kwok, C. Slater, X. Xu +2
Two ingots weighing 400 g and 5 kg with nominal compositions of Fe-8Mn-4Al-2Si-0.5C-0.07V-0.05Sn were produced to investigate the effect of processing variables on microstructure d…
4D-STEM elastic stress state characterisation of a TWIP steel nanotwin
T P McAuliffe, A K Ackerman, B H Savitzky +4
We measure the stress state in and around a deformation nanotwin in a twinning-induced plasticity (TWIP) steel. Using four-dimensional scanning transmission electron microscopy (4D…
Design of a High Strength, High Ductility 12 wt% Mn Medium Manganese Steel With Hierarchical Deformation Behaviour
T W J Kwok, K M Rahman, X Xu +6
A novel medium Mn steel of composition Fe-12Mn-4.8Al-2Si-0.32C-0.3V was manufactured with 1.09 GPa yield strength, 1.26 GPa tensile strength and 54% elongation. The thermomechanica…