Saturday, February 7, 2015

Rearden Metal coming soon?

Pure titanium metal in photo

Fans of Ayn Rand's 'Atlas Shrugged' will recognize this one

In a article published by Sang-Heon Kim, Hansoo Kim & Nack J. Kim of the  Graduate Institute of Ferrous Technology, POSTECH, Pohang 790-784, South Korea. 

They discovered a new alloy that combines Aluminum, Steel and a small amount of Nickel to make a metal as strong as Titanium.

Previous attempts at making this alloy resulted in brittleness because of the crystalline structure.  

Simply put it made hard yet brittle metal.

The Nickel on the other hand disperses the crystals so that they do not form as large, and in a structure that is both strong and light.

However full scale production is still a small ways off as the current mill process uses silicates to prevent steel from oxidizing during production. The silicates react with the process so another method will need to be devised.  Otherwise the whole process could be performed in existing mills without modification to equipment.

My hopes is that the laser sinter for 3D printing using ordinary $5 a pound Titanium dioxide powder becomes a reality as this alloy still will not have the heat resistant qualities of actual titanium.



Original links here since they want a couple hundred dollars to quote them directly:

http://www.popularmechanics.com/technology/news/a13919/new-steel-alloy-titanium/

http://www.nature.com/nature/journal/v518/n7537/full/nature14144.html


References• Author information• Extended data figures and tables
Davis, S., Diegel, S. & Boundy, R. Transportation Energy Data Book 32nd edn, 4–17 (Oak Ridge National Laboratory, 2013)
Militzer, M. Materials science: a synchrotron look at steel. Science 298, 975–976 (2002)
CASPubMedArticle
Kim, H., Suh, D. W. & Kim, N. J. Fe-Al-Mn-C lightweight structural alloys: a review on the microstructures and mechanical properties. Sci. Technol. Adv. Mater. 14, 014205 (2013)
CASArticle
Suh, D. W. & Kim, N. J. Low-density steels. Scr. Mater. 68, 337–338 (2013)
CASArticle
Zargaran, A., Kim, H. S., Kwak, J. H. & Kim, N. J. Effects of Nb and C additions on the microstructure and tensile properties of lightweight ferritic Fe–8Al–5Mn alloy. Scr. Mater. 89, 37–40 (2014)
CASArticle
Sutou, Y., Kamiya, N., Umino, R., Ohnuma, L. & Ishida, K. High-strength Fe-20Mn-Al-C-based alloys with low density. ISIJ Int. 50, 893–899 (2010)
CASArticle
Frommeyer, G. & Brüx, U. Microstructures and mechanical properties of high-strength Fe-Mn-Al-C light-weight TRIPLEX steels. Steel Res. Int. 77, 627–633 (2006)
CAS
Gutierrez-Urrutia, I. & Raabe, D. Influence of Al content and precipitation state on the mechanical behavior of austenitic high-Mn low-density steels. Scr. Mater. 68, 343–347 (2013)
CASArticle
Gschneidner, K., Jr et al. A family of ductile intermetallic compounds. Nature Mater. 2, 587–591 (2003)
CASArticle
Kuc, D., Niewielski, G. & Bednarczyk, I. Structure and plasticity in hot deformed FeAl intermetallic phase base alloy. Mater. Charact. 60, 1185–1189 (2009)
CASArticle
Stoloff, N. S., Liu, C. T. & Deevi, S. C. Emerging applications of intermetallics. Intermetallics 8, 1313–1320 (2000)
CASArticle
Liu, C. T., Stringer, J., Mundy, J. N., Horton, L. L. & Angelini, P. Ordered intermetallic alloys: an assessment. Intermetallics 5, 579–596 (1997)
CASArticle
Cao, G. H. et al. Determination of slip systems and their relation to the high ductility and fracture toughness of the B2 DyCu intermetallic compound. Acta Mater. 55, 3765–3770 (2007)
CASArticle
Davies, R. G. Influence of martensite composition and content on the properties of dual phase steels. Metall. Trans. A 9, 671–679 (1978)
Article
Thomser, C., Uthaisangsuk, V. & Bleck, W. Influence of martensite distribution on the mechanical properties of dual phase steels: experiments and simulation. Steel Res. Int. 80, 582–587 (2009)
CAS
Choi, K. et al. Effect of aging on the microstructure and deformation behavior of austenite base lightweight Fe-28Mn-9Al-0.8C steel. Scr. Mater. 63, 1028–1031 (2010)
CASArticle
Yoo, J. D. & Park, K. T. Microband-induced plasticity in a high Mn-Al-C light steel. Mater. Sci. Eng. A 496, 417–424 (2008)
CASArticle
Breuer, J., Grün, A., Sommer, F. & Mittemeijer, E. J. Enthalpy of formation of B2-Fe1-xAlx and B2-(Ni,Fe)1-xAlx. Metall. Mater. Trans. B 32, 913–918 (2001)
Article
Chumak, I., Richter, K. W. & Ipser, H. Isothermal sections in the (Fe, Ni)-rich part of the Fe-Ni-Al phase diagram. J. Phase Equil. Diffus. 29, 300–304 (2008)
CASArticle
Leslie, W. C. The Physical Metallurgy of Steels 43–59 (TechBooks, 1981)
Richeton, T., Weiss, J. & Louchet, F. Breakdown of avalanche critical behaviour in polycrystalline plasticity. Nature Mater. 4, 465–469 (2005)
CASISIArticle
Gil, F. J., Manero, J. M., Ginebra, M. P. & Planell, J. A. The effect of cooling rate on the cyclic deformation of β-annealed Ti-6Al-4V. Mater. Sci. Eng. A 349, 150–155 (2003)
Article
Tähtinen, S., Moilanen, P., Singh, B. N. & Edwards, D. J. Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys. J. Nucl. Mater. 307–311, 416–420 (2002)
Marmy, P. & Leguey, T. Impact of irradiation on the tensile and fatigue properties of two titanium alloys. J. Nucl. Mater. 296, 155–164 (2001)
CASArticle
Bowen, A. W. The influence of crystallographic orientation on tensile behaviour in strongly textured Ti6Al4V. Mater. Sci. Eng. 40, 31–47 (1979)
CASArticle
Dursun, T. & Soutis, C. Recent developments in advanced aircraft aluminium alloys. Mater. Des. 56, 862–871 (2014)
CASArticle
Merati, A. in Corrosion Fatigue and Environmentally Assisted Cracking in Aging Military Vehicles (RTO-AG-AVT-140) Ch. 24 (Research and Technology Organization, NATO, 2011)
Fan, D. W., Kim, H. S. & De Cooman, B. C. A review of the physical metallurgy related to the hot press forming of advanced high strength steel. Steel Res. Int. 80, 241–248 (2009)
CAS

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