摘要
Blended elemental 90W 7Ni 3Fe (mass fraction, %) powder was mechanically alloyed in a planetary ball mill. Nano crystalline grains were obtained after 10 h milling. The nano structured powder was processed to full density by metal injection molding approach. Compacts from the optimal powder binder mixture were studied for molding and sintering behaviors. Milling significantly increases the maximum powder loading and homogeneity of the feedstock, and enhances the sintering densification process. When solid state sintered at 1 350～1 450 ℃, the alloy shows very fine grains (～3 μm), high tensile strength (>1 130 MPa) and almost no distortion. [
Blended elemental 90W-7Ni-3Fe (mass fraction, %) powder was mechanically alloyed in a planetary ball mill. Nano-crystalline grains were obtained after 10 h milling. The nano-structured powder was processed to full density by metal injection molding approach. Compacts from the optimal powder-binder mixture were studied for molding and sintering behaviors. Milling significantly increases the maximum powder loading and homogeneity of the feedstock, and enhances the sintering densification process. When solid-state-sintered at 1 350 similar to1 450 degreesC, the alloy shows very fine grains (similar to3 mum), high tensile strength ( >1 130 MPa) and almost no distortion.
出处
《中国有色金属学会会刊：英文版》
CSCD
2000年第6期794-797,共4页
Transactions of Nonferrous Metals Society of China
基金
Project (5 96 3412 0 )supportedbytheNationalNaturalScienceFoundationofChinaandproject (715 -0 90 -0 90 )supportedbytheNational
