TY - JOUR
T1 - Amorphization of Co-base alloy by mechanical alloying
AU - Bolarín-Miró, A. M.
AU - Jesús, F. Sánchez De
AU - Torres-Villaseñor, G.
AU - Cortés-Escobedo, C. A.
AU - Betancourt-Cantera, J. A.
AU - Betancourt-Reyes, J. I.
N1 - Funding Information:
The authors want to gratefully acknowledge the technical support for the X-ray diffraction by Adriana Tejeda Cruz of the Institute of Materials of UNAM, México. Financial support was provided by the Fondos Mixtos (FOMIX)-Hidalgo of CONACYT from México (project number 129910 ).
PY - 2011/4/1
Y1 - 2011/4/1
N2 - Structural transformations and the amorphization of cobalt base alloy particles are possible when a powder mixture of Co and Cr-Mo is subjected to the mechanical alloying (MA) process. Elemental powders mixed in adequate weight ratios were used as precursors. The process was carried out at room temperature in a shaker mixer mill using vials and balls of hardened steel as milling media, with a ball:powder weight ratio of 8:1. The characterization of the crystalline structure of milled powders was carried out by means of X-ray diffraction to analyze the phase transformations as a function of milling time. The aim of this work was to demonstrate that MA can induce the amorphization of Co-Cr-Mo alloy. The evolution of the phase transformation during milling time is reported. The results showed that it is possible to produce a partial solid solution at room temperature of elemental metallic powders Co70Cr30 and Co90Mo10 by mechanical alloying. Using specific experimental conditions, it is also possible to obtain an amorphous phase in a composition Co60Cr30Mo10; first, Cr and Mo were mechanically prealloyed for 9 h to obtain a Cr80Mo20 solid solution, and Co was then added and milled in over 14 h.
AB - Structural transformations and the amorphization of cobalt base alloy particles are possible when a powder mixture of Co and Cr-Mo is subjected to the mechanical alloying (MA) process. Elemental powders mixed in adequate weight ratios were used as precursors. The process was carried out at room temperature in a shaker mixer mill using vials and balls of hardened steel as milling media, with a ball:powder weight ratio of 8:1. The characterization of the crystalline structure of milled powders was carried out by means of X-ray diffraction to analyze the phase transformations as a function of milling time. The aim of this work was to demonstrate that MA can induce the amorphization of Co-Cr-Mo alloy. The evolution of the phase transformation during milling time is reported. The results showed that it is possible to produce a partial solid solution at room temperature of elemental metallic powders Co70Cr30 and Co90Mo10 by mechanical alloying. Using specific experimental conditions, it is also possible to obtain an amorphous phase in a composition Co60Cr30Mo10; first, Cr and Mo were mechanically prealloyed for 9 h to obtain a Cr80Mo20 solid solution, and Co was then added and milled in over 14 h.
KW - Amorphous alloy
KW - Co alloys
KW - Co-Cr-Mo system
KW - Mechanical alloying
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=79953025757&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2011.02.016
DO - 10.1016/j.jnoncrysol.2011.02.016
M3 - Artículo
SN - 0022-3093
VL - 357
SP - 1705
EP - 1709
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 7
ER -