scholarly journals SIMULASI BATANG PENGHUBUNG PISTON DENGAN VARIASI MATERIAL Al Alloy DAN Ti Alloy MENGGUNAKAN METODE ELEMEN HINGGA

2020 ◽  
Vol 4 (1) ◽  
pp. 279-285
Author(s):  
Agus Dwi Putra
Keyword(s):  
Safety Factor ◽  
Al Alloy ◽  
Ti Alloy

Motor bakar adalah motor yang dalam cara kerjanya membutuhkan pembakaran dengan merubah energi kimia menjadi energi mekanik. Pembakaran yang sering terjadi dalam ruang bakar dapat mengakibatkan panas dalam ruang bakar dimana pembakaran tersebut membutuhkan gerak bolak balik dari piston. Agar piston dapat berporasi normal maka, dibutuhkan komponen yang kuat untuk mendorong dan menopang piston tersebut. Komponen yang mendorong piston dalam dunia otomotif disebut dengan batang piston. Pemilihan material batang piston harus diperhatikan dengan ketelitian yang tinggi. Salah satu bahan penyusun material yang sering digunakan adalah Al Alloy dan Ti Alloy. Penelitian ini adalah untuk menguji dan menganalisis batang piston dengan metode elemen hingga. Analisis elemen hingga pada batang piston dilakukan dengan bantuan software ANSYS. Simulasi ANSYS dimaksudkan untuk menguji perbedaan total deformasi, tegangan normal, dan safety factor pada masing-masing material. Hasil analisis menunjukkan bahwa deformasi terbesar dialami pada batang piston dengan material Al Alloy dengan nilai 0,672 mm sedangkan pada material Ti Alloy deformasi yang dialami sebesar 0,496 mm.

Comparative Study of Surface Contaminated Layer on Titanium Aluminum Alloy and Titanium Alloy Investment Castings

2021 ◽  
Vol 1035 ◽  
pp. 602-607
Author(s):  
Zhi Hua Feng ◽  
Xian Fei Ding ◽  
Xin Feng ◽  
Hai Nan ◽  
Ai Bin Zhang
Keyword(s):  
Titanium Alloy ◽  
Aluminum Alloy ◽  
Comparative Study ◽  
Chemical Reaction ◽  
Microhardness Measurement ◽  
Ceramic Mold ◽  
Al Alloy ◽  
Ti Alloy ◽  
Titanium Aluminum ◽  
Alloy Castings

A comparative study of the surface contaminated layer formed by chemical reaction between ceramic-mold and titanium aluminum alloy castings or titanium alloy castings were carried out. The morphology, thickness and hardness of the surface contaminated layer were characterized by means of metalloscopy and microhardness measurement. The results show that surface contaminated layers formed between Ti-Al alloy castings and ceramic-mold, also formed between Ti alloy castings and ceramic-mold. The surface contaminated layers of Ti-Al alloy castings were continuous and compact, their thickness was about 0~90 μm. The surface contaminated layers of titanium alloy castings were not even, their thickness was 0~900 μm. Titanium alloy is more liable to react with the ceramic -mold than the Ti-Al alloy.

Femtosecond laser ablation of Ti alloy and Al alloy

Optik ◽  
2020 ◽  
Vol 212 ◽  
pp. 164628
Author(s):  
Shizhen Xu ◽  
Yu Chen ◽  
Hao Liu ◽  
Xinxiang Miao ◽  
Xiaodong Yuan ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Al Alloy ◽  
Ti Alloy

Si diffusion behavior during laser welding-brazing of Al alloy and Ti alloy with Al-12Si filler wire

2010 ◽  
Vol 20 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Shu-hai CHEN ◽  
Li-qun LI ◽  
Yan-bin CHEN ◽  
De-jian LIU
Keyword(s):  
Laser Welding ◽  
Al Alloy ◽  
Filler Wire ◽  
Ti Alloy ◽  
Diffusion Behavior

scholarly journals Preparation of Superhydrophobic Surfaces Based on Rod-Shaped Micro-Structure Induced by Nanosecond Laser

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1274
Author(s):  
Zhi Li ◽  
Gang Xue ◽  
Yanming Wu ◽  
Xinghua Wang ◽  
Hengpei Pan
Keyword(s):  
Surface Oxidation ◽  
Frictional Resistance ◽  
Superhydrophobic Surfaces ◽  
Major Influence ◽  
Nanosecond Laser ◽  
Al Alloy ◽  
Ti Alloy ◽  
Micro Structure ◽  
Coefficient Of Thermal Conductivity ◽  
Layer Effect

Solid–liquid frictional resistance is mainly attributed to the adhesion caused by the boundary layer effect. Superhydrophobic surfaces are expected to be an effective method to reduce frictional resistance. In this paper, a rod-shaped micro-structure was prepared on surfaces of Al alloy (5083) and Ti alloy (TC4) by line-by-line scanning with nanosecond laser. The inherent properties of the metal materials—such as their coefficient of thermal conductivity (CTC) and specific heat capacity (SHC)—had a major influence on the surface morphology and shape size of the rod-shaped micro-structure. Both two metals showed apparent oxidation on their surfaces during laser ablation, however, the degree of surface oxidation of the Al alloy was greater than that of the Ti alloy due to its more fragmentary rod-shaped micro-structure. The laser-treated surfaces could turn from hydrophilic to hydrophobic or even superhydrophobic after being left in the air for 20 days, which might be caused by the adsorption of low-surface energy matter in the air. In addition, the contact angle of the Al alloy was larger than that of the Ti alloy, which is due to the larger ratio of height to width of the micro–nano composite rod-shaped micro-structure on the surface of the Al alloy.

Flame spray assisted TLP bonding of Ti alloy to Al alloy

2021 ◽  
Vol 263 ◽  
pp. 124404
Author(s):  
Mohammad Ammar Mofid ◽  
Alireza Mahdavi Nejad
Keyword(s):  
Al Alloy ◽  
Flame Spray ◽  
Ti Alloy ◽  
Tlp Bonding

scholarly journals Friction Stir Spot Welding-Brazing of Al and Hot-Dip Aluminized Ti Alloy with Zn Interlayer

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 922 ◽  
Author(s):  
Xingwen Zhou ◽  
Yuhua Chen ◽  
Shuhan Li ◽  
Yongde Huang ◽  
Kun Hao ◽  
...  
Keyword(s):  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Fracture Load ◽  
Stir Zone ◽  
Welding Parameters ◽  
Al Alloy ◽  
Ti Alloy ◽  
Friction Stir ◽  
2014 Al Alloy ◽  
Al Coating

Friction stir spot welding (FSSW) of Al to Ti alloys has broad applications in the aerospace and automobile industries, while its narrow joining area limits the improvement of mechanical properties of the joint. In the current study, an Al-coating was prepared on Ti6Al4V alloy by hot-dipping prior to joining, then a Zn interlayer was used during friction stir joining of as-coated Ti alloy to the 2014-Al alloy in a lap configuration to introduce a brazing zone out of the stir zone to increase the joining area. The microstructure of the joint was investigated, and the joint strength was compared with the traditional FSSW joint to confirm the advantages of this new process. Because of the increase of the joining area, the maximum fracture load of such joint is 110% higher than that of the traditional FSSW joint under the same welding parameters. The fracture load of these joints depends on the joining width, including the width of solid-state bonding region in stir zone and brazing region out of stir zone.

A Novel Process for Joining Ti Alloy and Al Alloy using Two-Stage Sintering Powder Metallurgy

2018 ◽  
Vol 37 (5) ◽  
pp. 437-444
Author(s):  
Luping Long ◽  
Wensheng Liu ◽  
Yunzhu Ma ◽  
Lei Wu ◽  
Chao Liu
Keyword(s):  
Tensile Strength ◽  
Powder Metallurgy ◽  
Diffusion Bonding ◽  
Al Alloy ◽  
Ti Alloy ◽  
Two Stage ◽  
Bonding Quality ◽  
Powder Metallurgy Process ◽  
Brittle Fractures ◽  
Metallurgy Process

AbstractThe major challenges for conventional diffusion bonding of joining Ti alloy and Al alloy are the undesirable interfacial reaction, low matrixes and joint strength. To avoid the problem in diffusion bonding, a novel two-stage sintering powder metallurgy process is developed. In the present work, the interface characterization and joint performance of the bonds obtained by powder metallurgy bonding are investigated and are compared with the diffusion bonded Ti/Al joints obtained with the same and the optimized process parameters. The results show that no intermetallic compound is visible in the Ti/Al joint obtained by powder metallurgy bonding, while a new layer formed at the joint diffusion bonded with the same parameters. The maximum tensile strength of joint obtained by diffusion bonding is 58 MPa, while a higher tensile strength reaching 111 MPa for a bond made by powder metallurgy bonding. Brittle fractures occur at all the bonds. It is shown that the powder metallurgy bonding of Ti/Al is better than diffusion bonding. The results of this study should benefit the bonding quality.

Influence of Zinc on the Microstructure and Brittle Phases of Friction Stir Welded Joint of Al / Ti Dissimilar Alloys

2011 ◽  
Vol 413 ◽  
pp. 439-443 ◽  
Author(s):  
Yu Hua Chen ◽  
Liang Yu ◽  
Quan Ni
Keyword(s):  
Intermetallic Compounds ◽  
Welded Joint ◽  
Middle Layer ◽  
Al Alloy ◽  
Ti Alloy ◽  
Test Results ◽  
Friction Stir ◽  
Layer Material ◽  
Alloy Particles ◽  
Dissimilar Alloys

Titanium alloy TC1 and Aluminum alloy LF6 were butt jointed by friction stir welding (FSW) using zinc as the middle layer material. Influence of zinc on the microstructure and brittle phases were studied. The results show that, the microstructure of the nuclear zone is a mixture structure with Ti alloy particles distributed on Al alloy substrate. At the same time, XRD test results show that there TiAl3 intermetallic compounds and Zn0.69Ti0.31 intermetallic compounds in the nuclear region. The joint which is added zinc as the middle layer material becomes more brittle.

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