Evolution of Fragmented Fe-intermetallic Compounds in the Semi-Solid State of Al-Mg-Si-Fe Alloys by Deformation Semi-Solid Forming Process

2012 ◽  
pp. 1851-1856
Author(s):  
Chakkrist Phongphisutthinan ◽  
Hiroyasu Tezuka ◽  
Equo Kobayashi ◽  
Tatsuo Sato
Keyword(s):  
Solid State ◽  
Intermetallic Compounds ◽  
Forming Process ◽  
Fe Alloys ◽  
Semi Solid

Spray-Formed 50Si-50Al Alloy Deformed in the Semi-Solid State

2013 ◽  
Vol 573 ◽  
pp. 37-41
Author(s):  
Hong Chih Hsu ◽  
Chi Y.A. Tsao
Keyword(s):  
Solid State ◽  
Peak Stress ◽  
Spray Forming ◽  
Forming Process ◽  
Solid Deformation ◽  
Average Deformation ◽  
Deformation Speed ◽  
Last Stage ◽  
Deformation Stress ◽  
Semi Solid

50Si-50Al alloys were synthesized by the Spray Forming process, and were further deformed in the semi-solid state. The spray-formed microstructure consists of small equiaxed primary Si in 3-5 μm scale. For semi-solid deformation at 650°C at solid fraction (fs) of 0.4, the stress increases initially to reach the peak stress, then decreases to a plateau level, followed by last stage of stress climbing, and the effects of the deformation speeds on the stress level are significant, but not large. For deformation at 750°Cat fs of 0.31, the stress increases initially, then increases at a slower rate, followed by last stage of fast climbing, and the lower the deformation speed is, the higher the deformation stress. The average deformation stress needed at 650 °C was much higher that that needed at 750 °C. The deformation was inhomogeneous at 650°C to become pieces of connected semi-solid clusters, while the deformation was much more homogeneous at 750°C.

Semi-Solid Moulding of AZ91D Magnesium Alloy

2016 ◽  
Vol 850 ◽  
pp. 790-801
Author(s):  
Hong Xu ◽  
Xin Zhang ◽  
Chang Shun Wang ◽  
Jin Chuan Hu ◽  
Cheng Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid State ◽  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Metal Forming ◽  
Forming Process ◽  
Microstructural Characteristics ◽  
Az91d Magnesium Alloy ◽  
Key Points ◽  
Semi Solid

AZ91D magnesium alloy is one of the most widely used magnesium alloys in the production of metal forming, which use the characteristics from liquid state to solid state of metal to form. The present status of the research and application of the semi-solid forming for AZ91D magnesium alloys at present was reviewed in this paper, including the microstructural characteristics, the thixotropic and rheological behavior, the forming process of semi-solid for AZ91D magnesium alloys and the mechanical properties of the parts made of semi-solid magnesium alloys. The developing prospects and the key points of the semi-solid forming for AZ91D magnesium alloys were forecasted, and the industrial application of the alloy were also discussed.

Stand-Alone Semi-Solid-State Electrochemical Systems Based on Bicontinuous Microemulsion Gel Films

2020 ◽  
Vol 92 (20) ◽  
pp. 14031-14037
Author(s):  
Hinako Hashimoto ◽  
Kyosei Goto ◽  
Kouhei Sakata ◽  
Satoshi Watanabe ◽  
Tomoyuki Kamata ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Systems ◽  
Bicontinuous Microemulsion ◽  
Semi Solid ◽  
Microemulsion Gel

Experimental Investigations And Numerical Modelling of 210CR12 Steel in Semi-Solid State

2011 ◽  
Author(s):  
Piotr Macioł ◽  
Władysław Zalecki ◽  
Roman Kuziak ◽  
Aleksandra Jakubowicz ◽  
Stanisław Węglarczyk
Keyword(s):  
Solid State ◽  
Numerical Modelling ◽  
Experimental Investigations ◽  
Semi Solid

Mechanical Properties of Thixoformed 7075 Feedstock Produced via the Direct Thermal Method

2015 ◽  
Vol 651-653 ◽  
pp. 1569-1574 ◽  
Author(s):  
Asnul Hadi Ahmad ◽  
Sumsun Naher ◽  
Dermot Brabazon
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Solid State ◽  
Tensile Testing ◽  
Thermal Method ◽  
Test Unit ◽  
Pouring Temperature ◽  
Injection Test ◽  
Semi Solid ◽  
Conventionally Cast

Abstracts: This paper presents an overview of measured mechanical properties of thixoformed aluminium 7075 feedstock produced by the direct thermal method (DTM). The DTM feedstock billets were processed with a pouring temperature of 685 °C and holding periods of 20 s, 40 s and 60 s before being quenched and subsequently thixoformed. A conventionally cast feedstock billet was produced with a pouring temperature of 685 °C and was allowed to solidify without quenching. The feedstock billets were later formed by an injection test unit in the semi-solid state. Tensile testing was then conducted on the thixoformed feedstock billets. Tensile properties for 7075 DTM thixoformed feedstock billets were found significantly influenced by the thixoformed component density. Samples with longer holding times were found to have higher density and higher tensile strength.

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