scholarly journals Effects of Cerium Addition on Solidification Behaviour and Intermetallic Structure of Novel Al–Cu–Li Alloys

2016 ◽  
Vol 45 (6) ◽  
pp. 1423-1429 ◽  
Author(s):  
Yu Xinxiang ◽  
Yin Dengfeng ◽  
Yu Zhiming ◽  
Zhang Yiran ◽  
Li Shufei
Keyword(s):  
Solidification Behaviour ◽  
Intermetallic Structure

Li12Cu16+xAl26−x(x= 3.2): a new intermetallic structure type

2008 ◽  
Vol 64 (8) ◽  
pp. i73-i75 ◽  
Author(s):  
Volodymyr Pavlyuk ◽  
Grygoriy Dmytriv ◽  
Ivan Tarasiuk ◽  
Hermann Pauly ◽  
Helmut Ehrenberg
Keyword(s):  
Structure Type ◽  
Intermetallic Structure

Synthesis and effect of Misch metal on mechanical properties of conventional cast Mg–Al–Zn–Sn–Pb alloy system

2015 ◽  
Vol 231 (7) ◽  
pp. 627-637
Author(s):  
G Gaurav ◽  
Q Murtaza ◽  
N Yuvraj ◽  
D Mandal ◽  
KL Sahoo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Automobile Industry ◽  
Weight Ratio ◽  
Alloy System ◽  
Chinese Script ◽  
Percentage Elongation ◽  
Misch Metal ◽  
Intermetallic Structure

Magnesium alloys are increasingly accepted in automobile industry owing to their greater strength-to-weight ratio. These qualities lead to less vehicle weight and better fuel economy. Therefore, in the present work an effort has been made to develop a new Mg alloy system that exhibits greater ductility together with greater mechanical strength. Misch metal is added in Mg-based alloys to investigate the changes in mechanical properties. The microstructure of alloys Mg–4Al–3Zn–3Sn–3Pb (H1) and Mg–4Al–3Zn–3Sn–3Pb–0.5MM (H2) are dendritic in nature while for Mg–3Zn–3Sn–3Pb–2Si (H3) the “Chinese script” Mg2Si intermetallic structure was obtained. The ultimate tensile strength and elongation of Mg–4Al–3Zn–3Sn–3Pb–0.5MM (H2) alloy are about 40% and 100 % higher than that of H3 alloy. The ultimate tensile strength, yield strength, and percentage elongation of H2 alloy are 170 MPa, 44 MPa, and 3.4%, respectively.

Phase equillibria and solidification behaviour in the vanillin–p-anisidine system

2008 ◽  
Vol 311 (1) ◽  
pp. 118-122 ◽  
Author(s):  
N.B. Singh ◽  
S.S. Das ◽  
Preeti Gupta ◽  
M.K. Dwivedi
Keyword(s):  
Solidification Behaviour

Solidification Behaviour of 357 Al-Alloy under Intensive Forced Convection

2006 ◽  
Vol 519-521 ◽  
pp. 1747-1752 ◽  
Author(s):  
Michael Hitchcock ◽  
Zhong Yun Fan
Keyword(s):  
Forced Convection ◽  
Ostwald Ripening ◽  
Particle Growth ◽  
Primary Phase ◽  
Al Alloy ◽  
Growth Behaviour ◽  
Entire Volume ◽  
Solidification Behaviour ◽  
Primary Particles ◽  
Fast Growth Rate

Solidification behaviour of 357 Al-alloy under intensive forced convection in the rheo-die-casting (RDC) process, was investigated experimentally to understand the effects of the intensity of forced convection and shearing time on the nucleation and growth behaviour. It was found that under intensive forced convection, heterogeneous nucleation occurred continuously throughout the entire volume of the solidifying melt. All the nuclei could survive due to the uniform temperature and composition fields created by the forced convection. This has been named as ‘effective and continuous nucleation’. It is also found that the nuclei grow spherically with an extremely fast growth rate. This makes the primary solidification essentially a slow coarsening process, in which Ostwald ripening takes place by dissolution of the smaller particles. In addition, it was found that intensive forced convection suppresses partially the formation of the primary phase, promote nucleation of the primary particles, and hinders the particle growth.

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