Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province

Hefei, China

Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province

Hefei, China
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Li P.,Hefei University of Technology | Li P.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | Su H.L.,Hefei University of Technology | Su H.L.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | And 3 more authors.
Materials Science and Technology (United Kingdom) | Year: 2013

Fe73·37Cu0·92Nb 2·9Si13·56B9·24 amorphous alloy ribbon was prepared by melt spinning method. The influences of the annealing temperature on its microstructure and soft magnetic properties were investigated. Two crystallisation stages were found with temperature increasing by using differential scanning calorimetry. X-ray diffraction test showed that the first crystallisation phase is α-Fe(Si) with the average grain sizes ranging from 12 to 25 nm when annealing temperature is below 560°C and the secondary crystallisation phase with an average grain size of about 45 nm appears when annealing temperature is at 700°C. The soft magnetic property measurement showed that the Bs increases to 1·26 T and the Hc decreases to 0·002 Oe when annealing temperature increased from 520 to 560°C, while corresponding values for the alloy annealed at 700°C are 1·1 T and 0·079 Oe respectively. These results indicate that the Fe73·37Cu0·92Nb 2·9Si13·56B9·24 alloy annealed at 560°C has the relatively best magnetic properties. © 2013 Institute of Materials, Minerals and Mining.


Yu H.,Hefei University of Technology | Yu H.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | Cheng H.-F.,Hefei University of Technology | Cheng H.-F.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | And 6 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2012

Refining effects of high-intensity ultrasonic treatment on primary Si of hypereutectic Al-Si alloy were investigated by processing Al-20%Si alloy melt under the high-intensity ultrasonic field during solidification. The results show that with the high-intensity ultrasonic treatment, the thick plate primary Si in Al-20%Si alloy is refined to spherical shape and crystal dimension is diminished, and the round and homogeneous grains are obtained. The effects of refinement are more remarkable with increasing the power of ultrasonic. It is found that the position of introducing ultrasonic in the melt significantly influence the microstructure of Al-20%Si alloy. The better refinement results on the microstructure of Al-20%Si alloy can be obtained by ultrasonic treatment at a shallow depth and a center of the metal melt.


Wu J.,Hefei University of Technology | Cheng H.,Hefei University of Technology | Cheng H.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | Huang X.,Hefei University of Technology | And 2 more authors.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2011

The ZL101 open-cell aluminum alloy foams were fabricated by pressure-infiltration with the matrix made by the soluble gypsum blocks, and then the aluminum alloy foams were treated by modification and T6 treatment. Effects of these treatments on energy-absorption capacity and energy absorption efficiency were investigated by the quasi-static compression testing. The results show that porosity of the aluminum alloy foams reach 89.3%~90.7%. Strength of the open-cell aluminum alloy foams can be effectively improved by modification and heat treatment, and high specific strength of open-cell aluminum alloy foam with specific strength of 2.2 and approximately 85% energy-absorption can be obtained.


Cheng H.-F.,Hefei University of Technology | Cheng H.-F.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | Huang X.-M.,Hefei University of Technology | Huang X.-M.,Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province | And 8 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2011

A hypereutectic Al-20%Si alloy was treated by high-intensity ultrasonic, and the effects of ultrasonic treatment on microstructure of the Al-20%Si were studied. The variation of solidified microstructure of the alloy with ultrasonic parameters and temperature of the melt was examined for Al-20%Si alloy melt with ultrasonic treatment at 620-680°C. The results indicate that with increase of ultrasonic power and the treating time, coarse block and plate primary silicon is modified to be in finer nodular or polygonal shape. The optimum microstructure with fine and homogeneous distribution of primary Si phase is obtained for the Al-20%Si alloy by ultrasonic treatment at 660°C.

Loading Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province collaborators
Loading Engineering Laboratory of Nonferrous Materials and Processing of Anhui Province collaborators