NDLI: Enhanced superplasticity in an Al-alloyed multicomponent Mn–Si–Cr–C steel

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Enhanced superplasticity in an Al-alloyed multicomponent Mn–Si–Cr–C steel

Content Provider	Semantic Scholar
Author	Zhang, Han Pradeep, Konda Gokuldoss Mandal, Suvendu Ponge, Dirk Choi, Pyuck-Pa Tasan, Cemal Cem Raabe, Dierk
Copyright Year	2014
Abstract	Abstract Excellent superplasticity (elongation ∼720%) is observed in a novel multi-component (Mn–S–Cr–Al alloyed) ultrahigh carbon steel during tensile testing at a strain rate of 2 × 10 −3 s −1 and a temperature of 1053 K (just above the equilibrium austenite–pearlite transformation temperature). In order to understand superplasticity in this material and its strong Al dependence, the deformation-induced microstructure evolution is characterized at various length scales down to atomic resolution, using X-ray diffraction, scanning electron microscopy, electron backscatter diffraction, energy-dispersive X-ray spectroscopy and atom probe tomography. The results reveal that 1 wt.% Al addition influences various microprocesses during deformation, e.g. it impedes Ostwald ripening of carbides, carbide dissolution, austenite nucleation and growth and void growth. As a result, the size of the austenite grains and voids remains relatively fine (
Starting Page	232
Ending Page	244
Page Count	13
File Format	PDF HTM / HTML
DOI	10.1016/j.actamat.2013.10.034
Volume Number	63
Alternate Webpage(s)	http://www.dierk-raabe.com/app/download/5793003388/Acta-Mat-2013-superplastic-steel-Al-content.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.actamat.2013.10.034
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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