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Volume 5, Issue 5
Res. Rev. J Mat. Sci. 2017
ISSN: 2321-6212
Advanced Materials 2017
September 07-08, 2017
September 07-08, 2017 | Edinburgh, Scotland
Advanced materials & Processing
11
th
International Conference on
Processing and characterization of Intercritically Austempered Ductile Iron (IADI)
Alan Druschitz, M. Ostrander, D.C. Fitzgerald
and
R. Aristizabal
Virginia Tech, USA
I
ntercritically austempered ductile iron (IADI) has a microstructure of well-formed graphite nodules in a matrix of ferrite and
ausferrite. Thismicrostructure produces amaterial that has better strength and ductility compared to ferrite/pearlitemicrostructures
and better ductility, improved resistance to environmentally assisted cracking, and better machinability compared to fully ausferritic
microstructures (conventional austempered ductile iron). The austenite in the ausferrite particles can undergo transformation
induced plasticity but this transformation is a function of particle morphology and chemistry. This microstructure is also a challenge
to produce in thick section sizes since the ability to produce ausferrite is a function of cooling rate and chemistry. The production and
characterization of IADI will be discussed in an effort to encourage the further development of this material.
adrus@vt.eduRes. Rev. J Mat. Sci. 2017, 5:5
DOI: 10.4172/2321-6212-C1-006