Mechanism of Reduction in Grain and Particle Sizes of Nix-Fe100x Nanopowder by Mechanical Alloying

Ball milling with high energy for mechanical alloying was followed to make Ni-Fe alloy powders from elemental Ni and Fe powders having the sizes of 80 µm (Ni) and 25 µm (Fe). Preparations were carried out at room temperature with various duration of time ranging from 2 to 100 hours using ball milling with high energy. Analyses based on X-ray diffraction pattern and particle size analyzer were used for characterization of powders. During ball milling, it was observed that the reduction of grain size and particle size occurred in a stepped fashion. This observation indicates that the reduction in grain size and particle size occurs in a successive cyclic fashion, contrary to the expectation of concurrent reduction.

[1]  Pulak M. Pandey,et al.  Magnetorheological Ball End Finishing Process , 2012 .

[2]  P. Arrazola,et al.  Influence of Heat Treatment on the Machinability of Titanium Alloys , 2012 .

[3]  Lin Zhou,et al.  Effect of Hot Rolling on the Structure of TC21 Alloy with Acicular Alpha , 2012 .

[4]  M. Verdian.  Supersaturated Ni-10 wt% Ti Alloys Fabricated by Mechanical Alloying and Plasma Spraying , 2011 .

[5]  L. J. Berchmans,et al.  Low-Temperature Synthesis of Lithium Manganese Oxide Using LiCl-Li2CO3 and Manganese Acetate Eutectic Mixture , 2011 .

[6]  A. Salmi,et al.  High-Speed Milling of Tool Steel Dies for Aluminium Extrusion: Surface Roughness, Dimensional Tolerance and Chip Removal Mechanisms , 2011 .

[7]  M. Verdian.  Fabrication of Supersaturated NiTi(Al) Alloys by Mechanical Alloying , 2010 .

[8]  K. Prashanth.  Influence of Mechanical Activation on Decomposition of Titanium Hydride , 2010 .

[9]  A. Leacock,et al.  Numerical Simulation of the Four Roll Bending Process , 2010 .

[10]  M. Salehi,et al.  Thermal spray coatings of Ni–10 wt-%Al composite powder synthesised by low energy mechanical milling , 2009 .

[11]  M. P. Phaniraj,et al.  Microstructure development in mechanically alloyed yttria dispersed austenitic steels , 2009 .

[12]  Xin-bo He,et al.  Morphology and microstructure characterization of 95W-3.5Ni-1.5Fe powder prepared by mechanical alloying , 2006 .

[13]  J. Greneche,et al.  Synthesis and characterization of high-energy ball milled nanostructured Fe50Ni50 , 2006, Catalysis Today.

[14]  B. S. Murty,et al.  On amorphization and nanocomposite formation in Al-Ni-Ti system by mechanical alloying , 2005 .

[15]  J. Greneche,et al.  X-ray diffraction and Mössbauer studies of nanocrystalline FeNi alloys prepared by mechanical alloying , 2004 .

[16]  N. Fenineche,et al.  Structure and magnetic properties of nanocrystalline mechanically alloyed Fe–10% Ni and Fe–20% Ni , 2003 .

[17]  张明旭,et al.  Structural Evolution of Nanostructured γ—Ni—28Fe Alloy Investigated by Using the Internal Friction Technique , 2003 .

[18]  J. Sun,et al.  Microstructural evolution of an Al67Mn8Ti24Nb1 alloy during mechanical milling and subsequent annealing process , 2002 .

[19]  W. Tseng,et al.  Thermal and microstructural characterizations of nickel nanoparticles at elevated temperatures , 2002 .

[20]  Brian S. Mitchell,et al.  Nanoparticles from Mechanical Attrition , 2002 .

[21]  G. K. WILLIAMSONt,et al.  X-RAY LINE BROADENING FROM FILED ALUMINIUM AND WOLFRAM* , 2002 .

[22]  V. Boldyrev,et al.  Size effects in chemistry of heterogeneous systems , 2001 .

[23]  J. S. Jang,et al.  Study of the nano-structured nickel-based brazing filler synthesized by mechanical alloying , 2001 .

[24]  Young Do Kim,et al.  Formation of nanocrystalline Fe–Co powders produced by mechanical alloying , 2000 .

[25]  Randall M. German,et al.  Powder metal technologies and applications , 1998 .

[26]  Lu.  Interfacial structural characteristics and grain-size limits in nanocrystalline materials crystallized from amorphous solids. , 1995, Physical review. B, Condensed matter.

[27]  S. Berger,et al.  Solid state amorphization by mechanical alloying : an atomistic model , 1994 .

[28]  R. C. Reed,et al.  A simple model for multipass steel welds , 1994 .

[29]  A. Yavari,et al.  Mechanically driven alloying of immiscible elements. , 1992, Physical review letters.

[30]  H. Gleiter,et al.  Materials with ultrafine microstructures: Retrospectives and perspectives , 1992 .

[31]  C. Koch,et al.  The hall-petch relationship in nanocrystalline iron produced by ball milling , 1990 .

[32]  H. Miura,et al.  Preparation of iron-nickel based metal-metalloid amorphous powders by mechanical alloying , 1990 .

[33]  R. A. Hadfield,et al.  Researches on the electrical conductivity and magnetic properties of upwards of one hundred different alloys of iron , 1902 .