The improved effects by the combinative addition of lanthanum and samarium on the microstructures and the tensile properties of high-pressure die-cast Mg–4Al-based alloy

2015 ◽  
Vol 628 ◽  
pp. 319-326 ◽  
Author(s):  
Qiang Yang ◽  
Fanqiang Bu ◽  
Fanzhi Meng ◽  
Xin Qiu ◽  
Deping Zhang ◽  
...  
Keyword(s):  
High Pressure ◽  
Tensile Properties ◽  
Die Cast

The Effect of Low-Temperature Ageing on the Tensile Properties of High-Pressure Die-Cast Mg-Al Alloys

2013 ◽  
pp. 295-300 ◽  
Author(s):  
A L Bowles ◽  
T J Bastow ◽  
C J Davidson ◽  
J R Griffiths ◽  
P D D Rodrigo
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Tensile Properties ◽  
Al Alloys ◽  
Die Cast ◽  
Temperature Ageing

Predicting the Influence of Microporosity on the Mechanical Properties and Fracture Behavior of High-Pressure Die-Cast AM50 Magnesium Alloy

2014 ◽  
Vol 670-671 ◽  
pp. 90-94
Author(s):  
X. Sun ◽  
Z.Y. Cao ◽  
H.F. Liu ◽  
W. Jiang ◽  
L.P. Liu
Keyword(s):  
High Pressure ◽  
Stress Field ◽  
Tensile Properties ◽  
Fracture Behavior ◽  
Numerical Models ◽  
Equivalent Stress ◽  
Die Cast ◽  
Areal Fraction ◽  
Am50 Alloy ◽  
Power Law Equation

In this paper, experimental and finite element modeling methods were adopted to investigate the effects of microporosity on the tensile properties and fracture behavior of high-pressure die-casting (HPDC) AM50 alloy. By specimen-to-specimen fractographic analysis, the variability in tensile properties could be quantitatively correlated with the areal fraction of the porosity presented in the corresponding fracture surfaces by using a simple power law equation. Numerical models of synthetic microstructures with different pore sizes, areal fractions of pores and pore distributions were established. Based on the experimental and numerical simulation results, it could be concluded that the fracture will initially occur in the region where has the highest intensity of equivalent stress field (i.e., contains the most highly localized cluster of pores and shrinkage), and then, fracture crack will fast propagate through the adjacent regions which have the relatively high intensity of stress field.

Microstructures and Mechanical Properties of Heat-Resistant High-Pressure Die-Cast Mg-4Al-6RE-0.3Mn (RE= La, Ce, Pr, Nd, Wt.%) Alloys

2011 ◽  
Vol 686 ◽  
pp. 265-270 ◽  
Author(s):  
Zhe Leng ◽  
Jing Huai Zhang ◽  
Mi Lin Zhang ◽  
Jian Meng ◽  
Rui Zhi Wu
Keyword(s):  
High Pressure ◽  
Tensile Properties ◽  
Magnesium Alloys ◽  
Volume Fraction ◽  
High Volume ◽  
Boundary Area ◽  
Casting Technique ◽  
Good Thermal Stability ◽  
Heat Resistant ◽  
Die Cast

Mg-4Al-6RE-0.3Mn (RE=La, Ce, Pr, Nd, wt.%) magnesium alloys were prepared successfully by the high-pressure die-casting technique. The microstructures and tensile properties in the temperature range from room temperature to 200 °C were investigated. It was confirmed that the Mg-Al-RE-based alloys exhibited an outstanding die-cast character. The cross-section of test bar could be divided into the fine skin region and the relatively coarse interior region by a narrow band with fine structure. Two binary Al-RE (RE=La, Ce, Pr, Nd) phases with the former being the dominant one, Al11RE3and Al2RE, occupied large grain boundary area. All the four alloys exhibited excellent tensile properties until 200 °C, which were mainly attributed to the fine grain size and the strengthening phase Al11RE3with high volume fraction, fine acicular/lamellar morphology, "orderly stack” distribution and good thermal stability. The results of this work provided a basis for further investigation of the new heat-resistant high-pressure die-cast magnesium alloys designed to serve at temperature up to 200 °C.

Effect of position on the tensile properties in high-pressure die cast Mg alloy

2009 ◽  
Vol 470 (1-2) ◽  
pp. 111-116 ◽  
Author(s):  
D.G. Leo Prakash ◽  
Doris Regener ◽  
W.J.J. Vorster
Keyword(s):  
High Pressure ◽  
Tensile Properties ◽  
Mg Alloy ◽  
Die Cast

The Heat Treatment of Rheo-High Pressure Die Cast Al-Cu-Mg-Ag Alloy 2139

2012 ◽  
Vol 192-193 ◽  
pp. 173-178 ◽  
Author(s):  
Heinrich Möller ◽  
Gonasagren Govender
Keyword(s):  
High Pressure ◽  
Tensile Properties ◽  
Artificial Aging ◽  
Die Casting ◽  
Solution Treatment ◽  
High Strength ◽  
Incipient Melting ◽  
Scanning Calorimetry ◽  
Die Cast ◽  
Pressure Die Casting

High strength wrought Al-Cu-Mg-Ag alloy 2139 was successfully processed using the CSIR rheocasting system and cast into plates using high pressure die casting. Differential scanning calorimetry was used to determine suitable homogenization/solution treatment temperatures. A two-step homogenization/solution treatment of 490oC for 24 h, followed by 520oC for 2 h does not cause any incipient melting. Artificial aging of the R-HPDC 2139 plates at 160oC for 24 h results in tensile properties similar to those reported for thixoformed casting alloy 201-T6. The minimum military specifications for wrought 2139-T8 are exceeded in terms of strength, with slightly lower ductility being obtained. Artificial aging at 153oC for 20 h results in tensile properties that exceed all the minimum military specifications for wrought 2139-T8.

Microstructure, tensile properties, and creep behavior of high-pressure die-cast Mg–4Al–4RE–0.4Mn (RE = La, Ce) alloys

2009 ◽  
Vol 44 (8) ◽  
pp. 2046-2054 ◽  
Author(s):  
Jinghuai Zhang ◽  
Ke Liu ◽  
Daqing Fang ◽  
Xin Qiu ◽  
Dingxiang Tang ◽  
...  
Keyword(s):  
High Pressure ◽  
Tensile Properties ◽  
Creep Behavior ◽  
Die Cast
Sign in / Sign up

Export Citation Format

Share Document