Experimental Method of Mechanical Melting Point in A6N01-T5 Aluminum Alloy

2019 ◽  
pp. 85-95
Author(s):  
Lichun Meng ◽  
Xiaohong Sun ◽  
Yongming Cheng ◽  
Gongxiang Zhao ◽  
Jijin Xu
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Experimental Method

Research on the Repair Performance of Self-Healing Aluminum Material Based on the Low Melting Point Slicker Solder Alloy

2018 ◽  
Vol 932 ◽  
pp. 57-61
Author(s):  
Wei Sun ◽  
Rong Xin Yan ◽  
Li Chen Sun ◽  
Zheng Li ◽  
Guan Qing Lang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Matrix Material ◽  
High Energy ◽  
The Self ◽  
Al Alloy ◽  
Self Healing ◽  
Material Technology ◽  
Damage Repair ◽  
Aluminum Alloy 6063

It is great significance to study self-healing aluminum alloy materials for spacecraft the structure protection from high energy space weapon attack and debris impact in future. In this paper, Using aluminum alloy (6063) as matrix material with low melting point alloy (Sn60Pb40, the melting point of 183°C) as repairing materials, the self-healing Aluminum Alloy material was designed and manufactured by the smelting and casting method. The crack damage repair performance of the self-healing Al alloy was researched through the experiment. The results show that the self-healing aluminum alloy has certain self-healing ability without help, when the temperature reaches the melting point temperature of Sn60Pb40. The repair time is about 20min, the crack filling rate can reach 84%. The research conclusion can provide a reference for the development of metal self-healing material technology.

scholarly journals Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 140
Author(s):  
Yoshihiko Hangai ◽  
Mizuki Ando ◽  
Masataka Ohashi ◽  
Kenji Amagai
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Aluminum Foam ◽  
Cell Layer ◽  
Open Cell ◽  
Press Forming ◽  
Cell Structures ◽  
Closed Cell ◽  
The Press

Two-layered aluminum foam consisting of both closed and open cells is expected to improve the functionality of aluminum foam, because the cells have different morphologies and characteristics. In this study, press forming of the closed-cell layer of the two-layered aluminum foam immediately after foaming was performed to shape the closed-cell layer. By measuring the temperatures of the two layers during foaming, we found that it is necessary to use aluminum alloy with a higher melting point for the open-cell layer than that for the closed-cell layer to foam the closed-cell layer. In the press forming experiments, the closed-cell layer could be shaped by press forming while the shape of the open-cell layer was maintained.

scholarly journals Design and Fabrication of Crucible Furnaces by using Black Smithy Setup

2018 ◽  
Vol 8 (4) ◽  
Author(s):  
S. S. Bhandari ◽  
S. B. Badadal ◽  
V. G. Kinagi ◽  
H. S. Tuljapurkar ◽  
Prof.S. H. Bansode
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Thermal Efficiency ◽  
Graphite Crucible ◽  
Furnace Chamber ◽  
Higher Temperature

The main aim was, to design Pit Furnace from the setup of black smithy. As the Smithy setup was not in use so it is converted into Pit Furnace setup. The purpose of using Pit Furnace is to melt nonferrous material. The Nonferrous materials such as Aluminum, Aluminum alloy, Copper, Brass, etc. The Aluminum has less melting point (680ᵒ C, 1218ᵒF) and cheaper than other. The thermal efficiency of furnace is 13.72% which is obtained by melting 2 kg of Aluminum for 75 minutes. Normally thermal of pit furnace is between 4-19%. The blower is used to supply the air into the furnace chamber to burn the coal. For melting the Aluminum, Crucible should sustain higher temperature so Graphite Crucible is used. This Crucible has thinner wall and have more refractory properties.

scholarly journals Research on a Low Melting Point Al-Si-Cu (Ni) Filler Metal for 6063 Aluminum Alloy Brazing

2021 ◽  
Vol 11 (9) ◽  
pp. 4296
Author(s):  
Chengyin Peng ◽  
Dandan Zhu ◽  
Kaifeng Li ◽  
Xiang Du ◽  
Fei Zhao ◽  
...  
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Melting Point ◽  
Filler Metal ◽  
Shear Strength Test ◽  
Primary Si ◽  
Al2cu Phase ◽  
Brazed Joint ◽  
New Type ◽  
6063 Aluminum Alloy

A new type of low melting point Al-Si-Cu (Ni) filler metal for brazed 6063 aluminum alloy was designed, and the microstructure and properties of the filler metal were systematically studied. The results show that when the content of Cu in the Al-Si-Cu filler metal increased from 10 wt.% to 20 wt.%, the liquidus temperature of the filler metal decreased from 587.8 °C to 533.4 °C. Its microstructures were mainly composed of the α-Al phase, a primary Si phase, and a θ(Al2Cu) phase. After a proper amount of Ni was added to the Al-Si-20Cu filler metal, its melting range was narrowed, the spreading wettability was improved, and the microstructure was refined. Its microstructure mainly includes α-Al solid solution, Si particles, and θ(Al2Cu) and δ(Al3Ni2) intermetallic compounds. The results of the shear strength test indicate that the shear strength of the brazed joint with Al-6.5Si-20Cu-2.0Ni filler metal was 150.4 MPa, which was 28.32% higher than that of the brazed joint with Al-6.5Si-20Cu filler metal.

Effect of High Magnetic Field on Phase Transformation of 7055 Alloy during Homogenization

2011 ◽  
Vol 189-193 ◽  
pp. 4472-4476 ◽  
Author(s):  
Li Zi He ◽  
Xie Hua Li ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Phase Transformation ◽  
Aluminum Alloy ◽  
Melting Point ◽  
High Magnetic Field ◽  
Interdendritic Region ◽  
S Phase ◽  
7055 Aluminum Alloy

The microstructural evolutions of 7055 aluminum alloy after single and two-step homogenization with or without applying 12T high magnetic field were investigated. The as-cast microstructures of 7055 alloy consist of α+AlZnMgCu eutectics, Al7Cu2Fe phase and AlTiCuFe phase. During homogenization, coarse α+AlZnMgCu eutectics located at interdendritic region become smaller, discontinuous and spheroidized, some of them transform into Al2CuMg (S) having a higher melting point. High magnetic field significantly accelerates the dissolution of α+AlZnMgCu eutectics and S phase. The least amount of α+AlZnMgCu eutectics and S phase is obtained when the alloy homogenized at 4650C/10h+4850C/8h under 12T high magnetic field.

Squeeze casting of SiCp/Al-alloy composites with various contents of reinforcements

2002 ◽  
Vol 17 (2) ◽  
pp. 376-385 ◽  
Author(s):  
Liang-Guang Chen ◽  
Kung-Hsien Shue ◽  
Shou-Yi Chang ◽  
Su-Jien Lin
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Squeeze Casting ◽  
Pure Aluminum ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Al Alloy ◽  
Matrix Composites ◽  
Sic Particles ◽  
Silicon Carbide Particles

Aluminum matrix composites reinforced with various contents and sizes of silicon carbide particles (SiCp) were fabricated by squeeze casting. A lower melting point AA A383 aluminum alloy (A383 Al) was squeezed into the higher melting point SiCp/pure aluminum (SiCp/pure Al) and SiCp/AA 6061 aluminum alloy (SiCp/6061 Al) preforms. The volume percents of the ceramic reinforcements were effectively lowered from traditional 50 to 8–25 vol% by the addition of pure Al and 6061 Al powders in the preforms. The SiC particles uniformly distributed within the matrices, and no pore was found in these composites. The growth of silicon precipitates in A383 Al alloys was limited by the addition of the aluminum alloy powders and SiC particles, and the tensile properties of the alloys were effectively enhanced by the refinement of the silicon precipitates. The tensile strengths and elongations of the SiCp/pure Al/A383 Al and SiCp/6061 Al/A383 Al composites were both better than those of the A383 Al alloy. The T6-treated 12-μm SiCp/6061 Al/A383 Al composite exhibited the highest tensile strength of 301 MPa.

Influence of an Inclined Cooling Plate on the Production of A356/CNF and A356/SiC MMC by Compocasting

2006 ◽  
Vol 519-521 ◽  
pp. 609-614
Author(s):  
R.G.S. Mussi ◽  
Tetsuichi Motegi ◽  
Fumi Tanabe ◽  
H. Kawamura ◽  
K. Anzai ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Sem Analysis ◽  
Copper Plate ◽  
Pouring Temperature ◽  
Cooling Plate ◽  
Separation Theory ◽  
The Matrix ◽  
Solidification Nuclei ◽  
Fluid Metal

The influence of an inclined cooling plate utilized as a modification in the compocasting process of aluminum alloy is studied in this paper. Based on the crystal separation theory, molten A356 is poured on the inclined copper plate in order to produce solidification nuclei inside the fluid metal, which is, then, mechanically stirred while reinforcement is added through its surface. Carbon nano fibers (CNF) and particulate SiC were utilized as reinforcement, in quantities varying from 0.5 to 15vol%. Dispersion of the reinforcements was observed by macro and microstructure analysis. For CNF, addition of quantities up to 1vol% resulted in homogeneous dispersion through the matrix, although SEM analysis showed the presence of clusters of up to 50μm in some points of the samples. SiC was properly mixed into matrix until 10vol%. Globular crystals were obtained, but some coarsening occurred, especially for small quantities of reinforcement. Utilization of the inclined cooling plate produced good inclusion and homogenization for two different reinforcements through an A356 matrix. The best results were obtained for a 180mm cooling plate, with inclination of 60o. The pouring temperature utilized was 10oC over the melting point of the alloy, and temperature of the tundish was kept around 598oC during stirring.

scholarly journals Development of an Al-Cu-Si-X alloy low-melting-point-braze for the aluminum alloy/ceramics joining

2005 ◽  
Vol 55 (10) ◽  
pp. 489-493 ◽  
Author(s):  
Tomo-o TANAKA ◽  
Masaya ITO ◽  
Toshio NARITA
Keyword(s):  
Aluminum Alloy ◽  
Melting Point

scholarly journals Design and Fabrication of Crucible Furnaces by using Black Smithy Setup

2018 ◽  
Vol 8 (4) ◽  
Author(s):  
S. S. Bhandari ◽  
S. B. Badadal ◽  
V. G. Kinagi ◽  
H. S. Tuljapurkar ◽  
Prof.S. H. Bansode
Keyword(s):  
Aluminum Alloy ◽  
Melting Point ◽  
Thermal Efficiency ◽  
Graphite Crucible ◽  
Furnace Chamber ◽  
Higher Temperature

The main aim was, to design Pit Furnace from the setup of black smithy. As the Smithy setup was not in use so it is converted into Pit Furnace setup. The purpose of using Pit Furnace is to melt nonferrous material. The Nonferrous materials such as Aluminum, Aluminum alloy, Copper, Brass, etc. The Aluminum has less melting point (680ᵒ C, 1218ᵒF) and cheaper than other. The thermal efficiency of furnace is 13.72% which is obtained by melting 2 kg of Aluminum for 75 minutes. Normally thermal of pit furnace is between 4-19%. The blower is used to supply the air into the furnace chamber to burn the coal. For melting the Aluminum, Crucible should sustain higher temperature so Graphite Crucible is used. This Crucible has thinner wall and have more refractory properties.

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