Production of amorphous La-Al-Ni and Zr-Al-Ni alloy tubes by a metallic-mould casting method

1993 ◽  
Vol 12 (12) ◽  
pp. 946-948 ◽  
Author(s):  
A. Inoue ◽  
T. Saito ◽  
H. Yamamoto ◽  
T. Masumoto
Keyword(s):  
Casting Method ◽  
Ni Alloy ◽  
Mould Casting

scholarly journals Influence of the Sr and Mg Alloying Additions on the Bonding Between Matrix and Reinforcing Particles in the AlSi7Mg/SiC-Cg Hybrid Composite

2016 ◽  
Vol 61 (2) ◽  
pp. 651-656 ◽  
Author(s):  
A. J. Dolata ◽  
M. Dyzia ◽  
S. Boczkal
Keyword(s):  
Phase Composition ◽  
Hybrid Composites ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Casting Method ◽  
Proper Selection ◽  
Alloying Additions ◽  
Reinforcing Particles ◽  
Mould Casting ◽  
Selection Of

Abstract The aim of the work was to perform adequate selection of the phase composition of the composite designated for permanent - mould casting air compressor pistons. The hybrid composites based on AlSi7Mg matrix alloy reinforced with mixture of silicon carbide (SiC) and glassy carbon (Cg) particles were fabricated by the stir casting method. It has been shown that the proper selection of chemical composition of matrix alloy and its modification by used magnesium and strontium additions gives possibility to obtain both the advantageous casting properties of composite suspensions as well as good bonding between particles reinforcements and matrix.

Preparation and Characterization of As-Cast and Hot-Rolled Mg-5Al-0.3Mn-1Ce Alloy

2011 ◽  
Vol 284-286 ◽  
pp. 1559-1563 ◽  
Author(s):  
Jian Li Wang ◽  
Jian Ping Li ◽  
Li Min Wang ◽  
Li Dong Wang
Keyword(s):  
Grain Size ◽  
Test Results ◽  
Casting Method ◽  
Rolled Sample ◽  
Cast Sample ◽  
Average Grain Size ◽  
Dislocation Strengthening ◽  
Hot Rolled ◽  
Mould Casting

Mg-5Al-0.3Mn-1Ce alloy was prepared by metal mould casting method. The as-cast ingot was homogenized and hot-rolled with total thickness reduction of 61% after four passes. Texture, microstructure and mechanical properties of the studied alloy were investigated. Results showed that the as-cast sample was mainly composed of a-Mg, Mg17Al12and Al11Ce3phases. Average grain size of the as-cast sample was about 500 μm. After hot-rolling, average grain size was greatly refined to about 20 μm. Further more, the long acicular Al11Ce3phase was smashed to small pieces. Tensile test results demonstrated that ultimate tensile strength and yield strength of the hot-rolled sample were improved by 65.2% and 165% respectively compared with those of the as-cast sample. Strength enhancement was attributed to grain refining strengthening and dislocation strengthening mechanisms.

Corrosion Behavior of Zr-Based Bulk Metallic Glasses by Addition of Ni

2012 ◽  
Vol 486 ◽  
pp. 321-327
Author(s):  
Chuan Jie Yuan ◽  
Xie Rong Zeng ◽  
Hai Xia Qian ◽  
Sheng Hui Xie
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Metallic Glasses ◽  
Alloy System ◽  
Immersion Test ◽  
Casting Method ◽  
Glass Forming ◽  
Polarization Test ◽  
Corrosion Deposits ◽  
Mould Casting

Fully amorphous Zr48Cu43-xAl7Ag2Nix(x=0, 2, 4, 6, 8 at. %) alloy system synthesized by Cu mould casting method were utilized to study corrosion behavior due to the poor corrosion resistance of Zr-Cu-Al-Ag alloy system by addition of Ni. High temperature DSC revealed that the Zr-based alloy system still maintained good glass-forming ability and thermal stability with the addition of Ni element. The result obtained from both the immersion test and the potentiodynamic polarization test showed that the addition of Ni element significantly improved the corrosion resistance compared to the Ni-free Zr-based alloy system. SEM graph showed a phenomenon of corrosive pit where there existed corrosion deposits as well as cellular textures and microcracks. In summary, proper addition of Ni could modify the corrosion resistance of the Zr-based alloy system.

Effect of Nd Content on the Microstructures and Mechanical Properties of As-Cast Mg15Al-xNd Alloys

2010 ◽  
Vol 146-147 ◽  
pp. 1004-1008
Author(s):  
Hong Xia Wang ◽  
Wei Liang ◽  
Guo Yin Xie ◽  
Chun Xiang Xu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Room Temperature ◽  
Casting Method ◽  
Mg17al12 Phase ◽  
Microstructures And Mechanical Properties ◽  
Mould Casting

Mg15Al-xNd (x=0, 0.5, 1.0, 1.5, 2.0and 4.0wt.%) alloys were prepared by metal mould casting method and the microstructures and mechanical properties were investigated. The results demonstrate that primary α-Mg grain is significantly refined with the addition of Nd element in Mg15Al alloy, and the best refinement is reached at 1.0wt.%Nd content. Further increasing Nd content leads to the coarsening of primary α-Mg grains. The added Nd element is also the reason of the refined eutectic β-Mg17Al12 and increased dispersion. The β-Mg17Al12 phase is thoroughly changed from fibrous coupled eutectic into divorced eutectic when Nd content reaches 1.5wt.%. Al11Nd3 phase is formed when the addition of Nd reaches to 1.0wt.% and Al2Nd phase emerges in the microstructure with increasing Nd content up to 4.0wt%. Addition of Nd element significantly improves the mechanical properties of Mg15Al alloy at room temperature. The best tensile strength and elongation is achieved by adding 1.0wt% Nd into Mg15Al alloy.

Effect of Cerium Addition on the Microstructure and Mechanical Properties of Al-Zn-Mg-Cu Alloy

2008 ◽  
Vol 279 ◽  
pp. 97-103 ◽  
Author(s):  
Anil K. Chaubey ◽  
S. Mohapatra ◽  
B. Bhoi ◽  
J.L. Gumaste ◽  
Barada Kanta Mishra ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Grain Refinement ◽  
Strengthening Mechanism ◽  
Casting Method ◽  
Cu Alloy ◽  
Microstructure And Mechanical Properties ◽  
Cast Alloys ◽  
Mould Casting

Al–8.6Zn–2.6Mg-2.4Cu–xCe(x = 0–0.4 wt. %) alloys were prepared by metal mould casting method, the effects of Ce on the microstructure and mechanical properties of the alloys were investigated. The results showed that the dendrite as well as grain size were refined by the addition of Ce, and the best refinement was obtained in 0.25 wt % Ce containing alloy. The main phases in the as-cast alloys were α-Al, Mg-Zn32, Mg32 (Al, Zn)49, and Al4Ce phase was found in the alloys containing more than 0.1%Ce. The addition of Ce improved the mechanical properties of the alloys. The strengthening mechanism was attributed to grain refinement and compound reinforced

Influence of Casting Method and Heat Treatment for Corrosion Resistance of Magnesium Alloy AZ91D

2014 ◽  
Vol 983 ◽  
pp. 110-115
Author(s):  
Anna Dobkowska ◽  
Bogusława Adamczyk-Cieślak ◽  
Joanna Zdunek ◽  
Jaroslaw Mizera ◽  
Krzysztof Jan Kurzydłowski
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Die Casting ◽  
Production Method ◽  
Az91d Alloy ◽  
Casting Method ◽  
Alloy Az91d ◽  
Pressure Die Casting ◽  
Casting Pressure ◽  
Mould Casting

In this paper the effect of production method and heat treatment of magnesium alloys to their corrosion resistance is presented. The study was carried out on the AZ91D alloy obtained by permanent mould casting, pressure die casting and pressure die casting with the subsequent heat treatment. Studies of the microstructure were carried out using a light microscope. The corrosion resistance was examined using the Potentiodynamic Test. The surface observations after corrosion tests were carried out using the Scanning Electron Microscope (SEM). It was stated that the best corrosion resistance is typical for AZ91D alloy produced by pressure die casting method with heat treatment. The alloy after permanent mould casting has got the worst corrosive properties.

scholarly journals Estimation Of Cooling Rates In Suction Casting And Copper-Mould Casting Processes

2015 ◽  
Vol 60 (2) ◽  
pp. 767-771 ◽  
Author(s):  
T. Kozieł
Keyword(s):  
Lamellar Spacing ◽  
Cooling Rates ◽  
Eutectic Transformation ◽  
Cu Alloys ◽  
Ni Alloy ◽  
Mould Casting ◽  
Cylindrical Samples ◽  
Copper Mould ◽  
Microstructural Examination ◽  
Made In

Abstract The cooling rates associated with suction and copper-mould casting of ø2, ø3 and ø5 mm rods made in Fe-25wt%Ni and Al-33wt%Cu alloys were determined based on their cellular and lamellar spacings, respectively. The work showed that the temperature profile in cylindrical samples can not be determined merely by microstructural examination of eutectic sample alloys. A concave solidification front, as a result of eutectic transformation, caused decrease of a lamellar spacing while approaching to the rod centre. The minimum axial cooling rates, estimated based on the cellular spacing in the Fe-25wt%Ni alloy, were evaluated to be about 200 K/s for both ø2 and ø3 mm and only 30 K/s for the ø5 mm suction cast rods. The corresponding values were slightly lower for the copper-mould cast rods.

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF TI-BASED METALLIC GLASS MATRIX COMPOSITES

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1260-1264
Author(s):  
JIANLI WANG ◽  
WEN HU ◽  
LIDONG WANG ◽  
YAOMING WU ◽  
LIMIN WANG
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Glass Matrix ◽  
Glassy Matrix ◽  
Matrix Composites ◽  
Compressive Test ◽  
Casting Method ◽  
Glass Matrix Composites ◽  
Mould Casting ◽  
Copper Mould

Ti 40 Cu 40 Ni 10 Zr 10-x Sc x (x = 0.5 and 1, at%) alloys were prepared by copper mould casting method. Microstructures of the ɸ 3 mm rod alloys were investigated by XRD and SEM. The results showed that the ɸ 3 mm rods were glassy matrix with TiCu crystalline phase. Mechanical properties were studied by compressive test. Ti 40 Cu 40 Ni 10 Zr 9 Sc 1 alloy exhibited good compressive strength over 2200 MPa and superior compressive deformation is about 7.9%.

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