Study on the solid solubility extension of Mo in Cu by mechanical alloying Cu with amorphous Cr(Mo)

Shen, Xi; Zuo, Kesheng; Liu, Xiaogang; Ran, Guang; Jing-en, Zhou

doi:10.1016/j.actamat.2008.08.013

Cited by 84 publications

(41 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rather, their observations suggest the occurrence of coupled mechanical and chemical effects like in cases of allotropic transformation of fcc cobalt powders to the hcp phase, 66) formation of supersaturated solid solutions, 67,68) amorphization, 69) and nanocrystallization of amorphous alloys 70) during ball milling (mechanical alloying). The powder particles during ball milling collide stochastically with each other and with milling bodies.…”

Section: Effective Temperature In the Driven Systemsmentioning

confidence: 99%

Accelerated Diffusion and Phase Transformations in Co–Cu Alloys Driven by the Severe Plastic Deformation

et al. 2012

View full text Add to dashboard Cite

The cast Co5.6 mass% Cu and Co13.6 mass% Cu alloys were subjected to severe plastic deformation (SPD) by the high-pressure torsion (HPT). The HPT treatment drastically decreases the size of the Co grains (from 20 µm to 100 nm) and the Cu precipitates (from 2 µm to 10 nm). The metastable fcc-Co disappeared, and supersaturated Co-based solid solution present in the as-cast alloys completely decomposed after HPT. Only the phases stable below 400°C remained after severe plastic deformation (i.e. almost pure hcp-Co and fcc-Cu grains). The applicability of the concept of effective temperature originally developed for materials under irradiation for the SPD-accelerated diffusion is discussed.

show abstract

Section: Effective Temperature In the Driven Systemsmentioning

confidence: 99%

Accelerated Diffusion and Phase Transformations in Co–Cu Alloys Driven by the Severe Plastic Deformation

et al. 2012

View full text Add to dashboard Cite

show abstract

“…It is necessary to know the thermodynamic characteristic of Cr-Mo alloy system for understanding the evolution mechanism during MA. In this paper, the thermodynamic characteristic of immiscible Cr-Mo alloy system is presented and the whole thermodynamic calculation process can be taken in accordance with Miedema's semiempirical model [6]. In this work, required parameters for calculating free-energy change of Cr-Mo alloy system at different temperatures are given in Table 1 [14][15][16].…”

Section: Thermodynamic Characteristicmentioning

confidence: 99%

“…As molybdenum has high melting temperature, it is difficult to get copper alloy with molybdenum by conventional melting process. According to thermodynamic conditions, the Cu-Mo alloy system has a large positive mixing enthalpy [6] and the solubility of Mo in Cu is small. The solubility extension of Mo in Cu has been widely studied [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…According to thermodynamic conditions, the Cu-Mo alloy system has a large positive mixing enthalpy [6] and the solubility of Mo in Cu is small. The solubility extension of Mo in Cu has been widely studied [6][7][8][9]. In previous study [6], to enhance the solubility of Mo in Cu, pre-amorphous Cr(Mo) alloy was synthesized by MA, and then the preamorphous Cr(Mo) alloy powder and pure Cu powder were mixed and milled, leading to the solubility of Mo in Cu exceeds 10 wt%.…”

Section: Introductionmentioning

confidence: 99%

“…The solubility extension of Mo in Cu has been widely studied [6][7][8][9]. In previous study [6], to enhance the solubility of Mo in Cu, pre-amorphous Cr(Mo) alloy was synthesized by MA, and then the preamorphous Cr(Mo) alloy powder and pure Cu powder were mixed and milled, leading to the solubility of Mo in Cu exceeds 10 wt%. Although, the Cr-Mo alloy system has a positive enthalpy, MA process can trigger the formation of amorphous Cr(Mo) phase.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermodynamic Characteristic and Phase Evolution in Immiscible Cr–Mo Binary Alloys

Sun

Shen

Zhang

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

This paper systematically reports the thermodynamic characteristic and phase evolution of immiscible Cr-Mo binary alloy during mechanical alloying (MA) process. The Cr-35Mo (in at%) powder mixture was milled at 243 and 258 K, respectively, for different time. For comparative study, Cr-15Mo and Cr-62Mo powder mixtures were milled at 243 K for 18 h. Solid solution Cr(Mo) with body-centered cubic (bcc) crystal structure and amorphous Cr(Mo) alloy was obtained during MA process caused by high-energy ball milling. Based on the Miedema's model, the free-energy change for forming either a solid solution or an amorphous in Cr-Mo alloy system is positive but small at a temperature range between 200 and 300 K. The thermodynamical barrier for forming alloy in Cr-Mo system can be overcome when MA occurs at 243 K, and the supersaturated solid solution crystal nuclei with bcc structure form continually, and three supersaturated solid solutions of Cr-62Mo, Cr-35Mo and Cr-15Mo formed. Milling the Cr-35Mo powder mixture at 258 K, the solid solution Cr(Mo) forms firstly, and then the solid solution Cr(Mo) transforms into the amorphous Cr(Mo) alloy with a few of nanocrystallines when milling is prolonged. At higher milling temperature, it is favorable for the formation of the amorphous phase, as indicated by the thermodynamical calculation for immiscible Cr-Mo alloy system.

show abstract

Structure Characterization of Sn‐based and Ce‐based Alloys Treated by Ultrafast Scanning

Zhao

Zhai

et al. 2014

Characterization of Minerals, Metals, and Materials 2014

View full text Add to dashboard Cite

Study on the solid solubility extension of Mo in Cu by mechanical alloying Cu with amorphous Cr(Mo)

Cited by 84 publications

References 33 publications

Accelerated Diffusion and Phase Transformations in Co–Cu Alloys Driven by the Severe Plastic Deformation

Accelerated Diffusion and Phase Transformations in Co–Cu Alloys Driven by the Severe Plastic Deformation

Thermodynamic Characteristic and Phase Evolution in Immiscible Cr–Mo Binary Alloys

Structure Characterization of Sn‐based and Ce‐based Alloys Treated by Ultrafast Scanning

Contact Info

Product

Resources

About

Study on the solid solubility extension of Mo in Cu by mechanical alloying Cu with amorphous Cr(Mo)

Cited by 84 publications

References 33 publications

Accelerated Diffusion and Phase Transformations in Co&ndash;Cu Alloys Driven by the Severe Plastic Deformation

Accelerated Diffusion and Phase Transformations in Co&ndash;Cu Alloys Driven by the Severe Plastic Deformation

Thermodynamic Characteristic and Phase Evolution in Immiscible Cr–Mo Binary Alloys

Structure Characterization of Sn‐based and Ce‐based Alloys Treated by Ultrafast Scanning

Contact Info

Product

Resources

About

Accelerated Diffusion and Phase Transformations in Co–Cu Alloys Driven by the Severe Plastic Deformation

Accelerated Diffusion and Phase Transformations in Co–Cu Alloys Driven by the Severe Plastic Deformation