Liquid segregation behaviour of a semi-solid squeeze cast A356 aluminium cup-shaped part

2017 ◽  
Vol 33 (18) ◽  
pp. 2203-2211 ◽  
Author(s):  
Mir Taher Seiyed Beigi ◽  
Behzad Niroumand
Keyword(s):  
Squeeze Cast ◽  
Shaped Part ◽  
Liquid Segregation ◽  
Semi Solid

Liquid segregation behavior of semi-solid AZ91 alloy during back extrusion test

2009 ◽  
Vol 477 (1-2) ◽  
pp. 822-827 ◽  
Author(s):  
A. Khosravani ◽  
H. Aashuri ◽  
P. Davami ◽  
A. Narimannezhad ◽  
R. Hadian
Keyword(s):  
Az91 Alloy ◽  
Segregation Behavior ◽  
Liquid Segregation ◽  
Semi Solid

Age hardening behaviour of semi‐solid squeeze cast A319 aluminium alloy

2018 ◽  
Vol 49 (12) ◽  
pp. 1503-1509 ◽  
Author(s):  
Q.F. Wang ◽  
L.D. Wang ◽  
D.Y. Zhu ◽  
Z. Lin ◽  
X. Chen ◽  
...  
Keyword(s):  
Aluminium Alloy ◽  
Age Hardening ◽  
Squeeze Cast ◽  
Semi Solid

Development of Horizontal Reheating System for Semi-Solid Die Casting and Its Microstructure Evaluation

2005 ◽  
Vol 475-479 ◽  
pp. 377-380
Author(s):  
P.K. Seo ◽  
Byung Min Kim ◽  
Chung Gil Kang
Keyword(s):  
Die Casting ◽  
Casting Process ◽  
Complicated Shape ◽  
Forming Process ◽  
Globular Structure ◽  
Liquid Segregation ◽  
Die Casting Process ◽  
Semi Solid ◽  
Reheating Process ◽  
High Frequency Induction

The parts manufactured by die casting process usually contain liquid segregation and porosities. To solve these problems, the semi-solid forming process has been applied. The process enables material in the semi-solid state to be completely filled, and parts with the complicated shape to be fabricated by applying relatively low pressure. This process is necessary in order to control the microstructure of the billet as well as to achieve the desired semi-solid billet state. In this study, a horizontal high-frequency induction heating device which can be fabricated by semi-solid forming irrespective of a billet's size was developed. A globular structure of the reheated billet and a billet's temperature distribution during the reheating process for A356 were investigated.

Creep of Slurry Squeeze-Cast ZA-27 Zinc Alloy with Different Solid Fractions at 140 °C

2018 ◽  
Vol 928 ◽  
pp. 194-199
Author(s):  
Chinnarut Panpun ◽  
Thawatchai Plookphol ◽  
Somjai Janudom
Keyword(s):  
Solid Fraction ◽  
Research Work ◽  
Creep Property ◽  
Ambient Air ◽  
Tensile Creep ◽  
Diffusional Creep ◽  
Zinc Alloy ◽  
Squeeze Cast ◽  
Creep Stress ◽  
Semi Solid

This research work was aimed at studying creep of a slurry squeeze-cast ZA-27 zinc alloy. The Gas-Induced Semi-Solid (GISS) technique was used for preparing semi-solid metal slurry with two different solid fractions. The ZA-27 alloy slurry was squeeze cast to form plate-like specimens with dimension of 100×100×15 mm3. The tensile specimens were machined from the squeeze-cast plates and heat-treated before mechanical test. Tensile creep tests were performed at 140 °C, at stresses of 20, 40, 60 and 80 MPa, in an ambient air. Two groups of specimens, the low solid fraction ZA-27 alloy (GISS 5s) and the high solid fraction ZA-27 alloy (GISS 15s) were tested for comparison of creep property. The results show that the GISS 5s has longer creep life than the GISS 15s. The power-law creep stress exponents (n) of GISS 5s and GISS 15s are 1.45 and 1.04, respectively. Based on the creep stress exponents found from the present study, it could be concluded that at the temperature of 140 °C and stress between 20 and 80 MPa, creep of both alloys was governed by the diffusional creep mechanism.

Squeeze Casting of Semi-Solid A356 Alloy

2014 ◽  
Vol 217-218 ◽  
pp. 436-441
Author(s):  
Xiang Jie Yang ◽  
Ming Wang ◽  
Liang Sheng Ding ◽  
Hong Min Guo ◽  
Xu Bo Liu
Keyword(s):  
Cross Section ◽  
Squeeze Casting ◽  
Volume Fraction ◽  
Solid Volume Fraction ◽  
Three Dimensional ◽  
A356 Alloy ◽  
Equivalent Diameter ◽  
Squeeze Cast ◽  
Cast Product ◽  
Semi Solid

the rheo-squeeze casting (Rheo-SQC) combining the rheocasting and the SQC was developed, in which semi-solid slurry was produced by the low superheat pouring with a shearing field (LSPSF) process. The three dimensional morphology of the primary α-Al phase and the rest spacing of slurry prepared by LSPSF process have been reconstructed and visualized, and the microstructures of squeeze cast A356 alloy have been obtained. Based on the three dimensional microstructure reconstructed, their three dimensional characterizations such as solid volume fraction, equivalent diameter of the extracted primary α-Al phase were measured and calculated, and the microstructures of cross section of squeeze cast product were investigated.

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