Microstructure Evolution of Tungsten-Based ODS Alloys Reinforced with the γ(Ni,~Fe) Phase by a Secondary Ball Milling Method

• Authors: C. Chen , Y. Zeng , J. Lee
• Languages of publication: EN

Abstracts

EN

In the current study, W-5Ni-2Fe-Y_2O_3 model alloys were produced using a high-energy planetary ball mill. The presence of the γ(Ni, Fe) phase is favored with respect to material properties in this alloy. Therefore, a secondary ball milling method was introduced to obtain a fine and uniformly distributed γ(Ni, Fe) phase. Phase development of mechanical alloyed powders was investigated by X-ray diffraction. The results show that the formation of the γ(Ni, Fe) phase was found after 18 h of a pre-milling procedure. A further secondary milling method produced a uniform microstructure with grain refinement. TEM results also show changes in the lattice parameters of the tungsten and γ(Ni, Fe) phase associated with the solid solubility limits in the alloy produced by secondary ball milling.

Keywords

EN

81.20.Ev; 81.20.Wk; 81.07.Bc; 81.05.Ni

Discipline

• 81.05.Ni: Dispersion-, fiber-, and platelet-reinforced metal-based composites
• 81.20.Wk: Machining, milling
• 81.07.Bc: Nanocrystalline materials
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 4
• Pages: 907-911

Dates

published

2014-10

Contributors

author

C. Chen

• Department of Materials Science and Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan

author

Y. Zeng

• Department of Materials Science and Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan

author

J. Lee

• Department of Materials Science and Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan

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Identifiers

DOI

10.12693/APhysPolA.126.907