Energetic TWIP - Department of Materials Science and Metallurgy

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Pressurised ESR: Additions ofup to 1 wt% N increaseaustenitic stainless steelstrengths to ~2GPa.ESR originally developed in the1960s in the UK in Sheffield.But, no onshore PESR capability.Adding interstitial N
Adding microalloyingTi, Nb, V additions can increase strength without interferingwith the TWIP mechanism.Both retarding grain growth in hot rolling (μm grains), andproviding nm precipitatesTi additions promote TiN – limit to 0.1wt% - maybe 150 MPaV additions – limit to 0.4 wt% - up to 300 MPaSee Scott et al, Int J Mat Res 102(5):538-549, 2011.
Page 1 and 2: Energe&c TWIPDavid DyeKhandaker
Page 3 and 4: Armour systemsDisturber - acts to r
Page 5 and 6: Performance diagram for steels1.4.
Page 7 and 8: Repeated twinning= dynamic Hall-Pet
Page 9 and 10: (a)The blast centre20 µm
Page 11 and 12: ... into the twin(c)0.5 µm 5 nm(d)
Page 13 and 14: analysis, but we acknowledge that t
Page 15 and 16: Effect of grain size20001500True St
Page 17 and 18: Twins in the fine grain…
Page 19: But Intrusion...Flow Curve:= y + m
Page 23 and 24: +Ti TWIPMelted from master alloys,
Page 25 and 26: Backup Slides

Energetic TWIP - Department of Materials Science and Metallurgy

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