skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structural stability of mechanically alloyed amorphous (FeCoNi)70Ti10B20 under high-temperature and high-pressure

Journal Article · · Journal of Alloys and Compounds
 [1];  [2]; ORCiD logo [3];  [4];  [5]
  1. Zonguldak Bülent Ecevit Univ. (Turkey)
  2. Kırıkkale Univ. (Turkey)
  3. Hacettepe Univ., Ankara (Turkey)
  4. Uniformity Labs, Fremont, CA (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Santa Cruz, CA (United States)

Nanostructured (FeCoNi)70Ti10B20 (at%) alloy was synthesized by mechanical alloying from elemental powder mixture of Fe, Co, Ni, Ti and B using ball milling. The effect of ball milling time on the evolution of structure and morphology was investigated by X-ray diffraction, scanning and transmission electron microscopy and differential thermal analysis. It was observed that the formation of solid solution of (FeCoNi)70Ti10B20 started from the very onset of the milling process. Crystallite size and lattice strains seemed to be leveled off after 20 h of milling with no further major changes. The milling process for longer periods introduced severe plastic deformations causing formation of amorphous phase of (FeCoNi)70Ti10B20. The amorphous alloy composition was confirmed by energy dispersive X-ray spectroscopy analysis that showed an excellent homogeneity of the alloying elements. The phase stability of the mechanically alloyed amorphous sample was further verified by employing high-temperature and high-pressure studies. The alloy samples heat-treated at 700 °C revealed crystallization of the amorphous phase. However, synchrotron-based high-pressure ambient temperature X-ray diffraction studies confirmed that the amorphous phase of the alloy remained stable up to the pressure of 30 GPa. Here, the 50 h milled sample after being annealed at 350 °C showed improvement in the soft magnetic properties of the alloy, which was due to the probable elimination of the residual stress in the amorphous phase of the alloy powders.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1844934
Journal Information:
Journal of Alloys and Compounds, Vol. 860; ISSN 0925-8388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (33)

Amorphization by ball milling. A review journal October 1988
Structural and magnetic properties of nanocrystalline Fe–Co–Ni alloy processed by mechanical alloying journal January 2016
Study of synthesis, structural and magnetic properties of nanostructured (Fe67 Ni33)70 Ti10 B20 alloy journal April 2018
Mechanical alloying of Fe–Ni based nanostructured magnetic materials journal April 2005
Effect of the atomic size distribution on glass forming ability of amorphous metallic alloys journal October 2001
Amorphous and nanocrystalline materials for applications as soft magnets journal October 1999
Classification of Bulk Metallic Glasses by Atomic Size Difference, Heat of Mixing and Period of Constituent Elements and Its Application to Characterization of the Main Alloying Element journal January 2005
Characterization and amorphous phase formation of mechanically alloyed Co60Fe5Ni5Ti25B5 powders journal November 2015
Preparation of ternary Ti0.9Ni0.1C cermets by mechanical alloying: Microstructure characterization by Rietveld method and electron microscopy journal March 2010
About the interfacial zone in nanocrystalline alloys journal June 2000
Nanostructured iron rich (Fe-Co)70 Mn10 Ti10 B10 mechanically alloyed powder: Synthesis and characterizations studies journal August 2020
The magnetic and structural properties of the most important alloys of iron produced by mechanical alloying journal October 2009
Amorphization and nanocrystallization of Ni–Nb-Si Alloys journal January 2017
The synthesis of amorphous NiTi alloy powders by mechanical alloying journal December 1985
Grain size dependence of coercivity and permeability in nanocrystalline ferromagnets journal January 1990
Influence of Milling Time on Structural and Microstructural Parameters of Ni 50 Ti 50 Prepared by Mechanical Alloying Using Rietveld Analysis journal January 2018
The accuracy of cell dimensions determined by Cohen's method of least squares and the systematic indexing of powder data journal June 1973
Morphology and magnetic behavior of cobalt rich amorphous/nanocrystalline (Co–Ni)70Ti10B20 alloyed powders journal September 2016
Structural, microstructural and magnetic properties of amorphous/nanocrystalline Ni63Fe13Mo4Nb20 powders prepared by mechanical alloying journal June 2011
A coherent polycrystal model for the inverse Hall-Petch relation in nanocrystalline materials journal March 1999
DIOPTAS : a program for reduction of two-dimensional X-ray diffraction data and data exploration journal May 2015
Structural, microstructural and thermal properties of nanostructured Fe60Al35Sn5 alloy synthesized by mechanical alloying journal February 2019
Evolution of microstructural and magnetic properties of mechanically alloyed Fe80−xNi20Six nanostructured powders journal November 2013
Mechanical milling and synthesis of Mg-SiC composites using underwater shock consolidation journal February 2012
New bulk amorphous Fe–(Co,Ni)–M–B (M=Zr,Hf,Nb,Ta,Mo,W) alloys with good soft magnetic properties journal June 1998
Modeling the atomic structure of an amorphous Co57Ti43 alloy produced by mechanical alloying using RMC simulations journal October 2008
Experimental determination of partial structures in Ni40Ti60 glass journal January 1984
Microstructural phase evaluation of high-nitrogen Fe–Cr–Mn alloy powders synthesized by the mechanical alloying process journal January 2009
Composition dependence of the microstructure and soft magnetic properties of Fe-based amorphous/nanocrystalline alloys: A review study journal May 2014
SYNTHESIS OF AMORPHOUS/NANOCRYSTALLINE NiTi POWDERS BY USING LOW ENERGY MECHANICAL ALLOYING journal April 2010
Amorphization and mechano-crystallization of high-energy ball milled Fe Ti alloys journal September 2019
Preparation of nanocrystalline Fe–Ni powders by mechanical alloying used in soft magnetic composites journal March 2008
Characterization, thermodynamic analysis and magnetic investigation of new soft magnetic amorphous/nanocrystalline Co50Fe21Ti19Ta5B5 powders produced by mechanical alloying journal April 2018

Similar Records

Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying
Journal Article · Mon Aug 16 00:00:00 EDT 2004 · Acta Materialia · OSTI ID:1844934

The effect of milling time on the synthesis of Cu{sub 54}Mg{sub 22}Ti{sub 18}Ni{sub 6} alloy
Journal Article · Fri Mar 25 00:00:00 EDT 2016 · AIP Conference Proceedings · OSTI ID:1844934

Structural, Magnetic and Magnetocaloric Properties of High-Energy Ball-Milled Gd{sub 5}Si{sub 2}Ge{sub 2}B{sub 0.05} Alloy
Journal Article · Fri Feb 15 00:00:00 EST 2019 · Journal of Superconductivity and Novel Magnetism · OSTI ID:1844934