Cryo-quenched Fe-Ni-Cr alloy single crystals: A new decorative steel

Boatner, Lynn A.; Kolopus, James A.; Lavrik, Nicolay V.; Phani, P. Sudharshan

doi:10.1016/j.jallcom.2016.08.327

Title: Cryo-quenched Fe-Ni-Cr alloy single crystals: A new decorative steel

Journal Article · Wed Aug 31 00:00:00 EDT 2016 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/j.jallcom.2016.08.327· OSTI ID:1327660

^[1]; Kolopus, James A. ^[1]; Lavrik, Nicolay V. ^[2]; Phani, P. Sudharshan ^[3]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
Nanomechanics, Inc., Oak Ridge, TN (United States)

In this paper, a decorative steel is described that is formed by a process that is unlike that of the fabrication methods utilized in making the original Damascus steels over 2000 years ago. The decorative aspect of the steel arises from a three-dimensional surface pattern that results from cryogenically quenching polished austenitic alloy single crystals into the martensitic phase that is present below 190 K. No forging operations are involved – the mechanism is entirely based on the metallurgical phase properties of the ternary alloy. The symmetry of the decorative pattern is determined and controlled by the crystallographic orientation and symmetry of the 70%Fe,15%Ni,15%Cr alloy single crystals. Finally, in addition to using “cuts” made along principal crystallographic surface directions, an effectively infinite number of other random-orientation “cuts” can be utilized to produce decorative patterns where each pattern is unique after the austenitic-to-martensitic phase transformation.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Nanomechanics, Inc. (United States)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1327660

Alternate ID(s):: OSTI ID: 1397559

Journal Information:: Journal of Alloys and Compounds, Vol. 691; ISSN 0925-8388

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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Swelling and Helium Bubble Morphology in a Cryogenically Treated FeCrNi Alloy with Martensitic Transformation and Reversion after Helium Implantation Zhang, Feifei; Boatner, Lynn; Zhang, Yanwen Materials, Vol. 12, Issue 17 https://doi.org/10.3390/ma12172821	journal	September 2019

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