scholarly journals The Structural and Mechanical Properties of MoS2-TiB2 Coated on AA7075 Produced by Powder Metallurgy Method

2019 ◽  
Vol 1 (2) ◽  
pp. 11-14
Author(s):  
Taha Alper Yılmaz
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Composite Films ◽  
Al Alloys ◽  
Al Alloy ◽  
Powder Metallurgy Method ◽  
Pressing Pressure ◽  
Powder Metal ◽  
Wear Properties ◽  
Space Conditions

AA7075 Al alloys are widely used in the aerospace industry. However, the mechanical properties of these alloys are insufficient in space conditions. AA7075 Al alloy is produced by powder metallurgy method due to the good wear properties. Then AA7075 Al alloys have to be adapted to mechanical properties MoS2-TiB2 composite films are deposited. MoS2-TiB2 composite films were grown on powder metal substrate using CFUBMS method in three different MoS2 target currents. Structural properties of composite films were analyzed by SEM, XRD and XPS methods. The mechanical properties of the films are carried out by microhardness and scratch tester. The best grade value of AA7075 powder metal alloy was made with 800MPa pressing pressure and increased from 2.61g/cm3 to 2.72g/cm3 after sintering. The highest hardness was obtained at the lowest MoS2 target voltage of 4.7GPa. The highest critical load value was obtained as 26N at the highest MoS2 target voltage.

Investigation and Comparison between Wear Properties of Powder Metallurgy (P/M) and Powder Forge (P/F) Product

2009 ◽  
Vol 283-286 ◽  
pp. 111-116
Author(s):  
Sadjad Abdi ◽  
H. Khorsand
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Wear Rate ◽  
Powder Metallurgy Method ◽  
Wear Properties ◽  
Powder Metallurgy Methods

In recent years powder metallurgy method P/M because of complicated parts production ability is used widely, but existence of porosities in this products will decrease mechanical properties in this method, but advanced powder metallurgy methods like powder forging P/F with having profits of powder metallurgy P/M because of visible reduce in porosities will decrease powder metallurgy problems. One of the mechanical properties that is effected by the porosity is wear properties ,in this research by comparison between two groups of specimen, that first group made by powder metallurgy method that had 14% amount of porosities and second group that made by powder forge method P/F that had less than 1% amount of properties and change in wear parameters in both of groups we survey wear properties and we compare wear rate and mechanism result is showing visible relation between wear properties and amount and morphology of porosities.

Influence of ageing treatment on microstructure, mechanical properties and adhesive wear behaviour of 6063 aluminium alloy

2014 ◽  
Vol 66 (4) ◽  
pp. 520-524 ◽  
Author(s):  
Serkan Büyükdoğan ◽  
Süleyman Gündüz ◽  
Mustafa Türkmen
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
High Speed ◽  
Al Alloys ◽  
Wear Behaviour ◽  
Al Alloy ◽  
Strain Ageing ◽  
Content Type ◽  
Static Strain ◽  
Structural Applications

Purpose – The paper aims to provide new observations about static strain ageing in aluminium (Al) alloys which are widely used in structural applications. Design/methodology/approach – The present work aims to provide theoretical and practical information to industries or researchers who may be interested in the effect of static strain ageing on mechanical properties of Al alloys. The data are sorted into the following sections: introduction, materials and experimental procedure, results and discussion and conclusions. Findings – Tensile strength, proof strength (0.2 per cent) and percentage elongation measurement were used to investigate the effect of strain ageing on the mechanical properties. Wear tests were performed by sliding the pin specimens, which were prepared from as-received, solution heat-treated, deformed and undeformed specimens after ageing, on high-speed tool steel (64 HRC). It is concluded that the variations in ageing time improved the strength and wear resistance of the 6063 Al alloy; however, a plastically deformed solution-treated alloy has higher strength and wear resistance than undeformed specimens for different ageing times at 180°C. Practical implications – A very useful source of information for industries using or planning to produce Al alloys. Originality/value – This paper fulfils an identified resource need and offers practical help to the industries.

Mixing Y89 Influence on Mechanical Properties of Casting Mg17Al12

2015 ◽  
Vol 667 ◽  
pp. 303-307
Author(s):  
Hang Song Yang ◽  
Shao Ju Hao ◽  
Jun Jie Liang
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Rare Earth ◽  
Powder Metallurgy ◽  
Magnesium Alloy ◽  
Light Quality ◽  
Mechanical Performance ◽  
Powder Metallurgy Method ◽  
Compression Performance ◽  
Refinement Effect

For its light quality, good thermal conductivity, and excellent electricity shielding performance, Magnesium alloy has been used in industry, agricultural and so on, for rare earth elements can improve the mechanical performance of magnesium alloy, the study of powder metallurgy is influence by rare earth magnesium is few at present. so, in this paper, by mixing powder metallurgy method the Y89 element was added in Mg17Al12 magnesium alloy, the influence of Y89 on microstructure, hardness and compression performance of Mg17Al12 magnesium alloy was studied, The experimental results show that when amount of Y89’s addition, the mechanical performance is more then and when is 1.22%, its mechanical performance is best, hardness is 66.7 HV, compressive strength is 113.6 MPa,increased respectively by 19.7% and 29.3% compared the Mg17Al12 magnesium alloy substrate, and the grain refinement effect of Mg17Al12 magnesium alloy is the best at this time.

Wear Resistance of Pre-ECAP Annealing A356 Al Alloy with 1.5 Wt.% TiB2

2019 ◽  
Vol 961 ◽  
pp. 118-125
Author(s):  
Muhammad Syukron ◽  
Zuhailawati Hussein ◽  
Abu Seman Anasyida
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Optical Microscopy ◽  
Al Alloys ◽  
Wear Testing ◽  
Al Alloy ◽  
Hardness Distribution ◽  
Grain Refiner ◽  
Ecap Processing

The combination of heat treatment, addition of grain refiner and ECAP processing is used to improve mechanical properties and wear resistance of A356 Al alloys with 1.5 wt.% TiB2. The alloys were grouped into as-cast and pre-ECAP annealing. The alloys were characterized with hardness and wear testing, optical microscopy and SEM. The ECAP processing was done through BA route for 4 passes and it improved hardness, distribution of TiB2 and Si particles in the aluminium matrix and increased wear resitance of pre-ECAP annealing specimen.

Enhanced mechanical properties in ultrafine grained 7075 Al alloy

2005 ◽  
Vol 20 (2) ◽  
pp. 288-291 ◽  
Author(s):  
Y.H. Zhao ◽  
X.Z. Liao ◽  
Y.T. Zhu ◽  
R.Z. Valiev
Keyword(s):  
Mechanical Properties ◽  
Natural Aging ◽  
Al Alloys ◽  
Coarse Grained ◽  
Tensile Yield Strength ◽  
Al Alloy ◽  
Aged Sample ◽  
Angular Pressing ◽  
7075 Al Alloy ◽  
Ultrafine Grained

Highest strength for 7075 Al alloy was obtained by combining the equal-channel-angular pressing (ECAP) and natural aging processes. The tensile yield strength and ultimate strength of the ECAP processed and naturally aged sample were 103% and 35% higher, respectively, than those of the coarse-grained 7075 Al alloy counterpart. The enhanced strength resulted from high densities of Guinier–Preston (G-P) zones and dislocations. This study shows that severe plastic deformation has the potential to significantly enhance the mechanical properties of precipitate hardening 7000 series Al alloys.

Effect of Sr Addition on Microstructure and Mechanical Properties of Semi-Solid 2024 Al Alloys

2014 ◽  
Vol 496-500 ◽  
pp. 336-339
Author(s):  
Nisachon Khunbanterng ◽  
Sirikul Wisutmethangoon ◽  
Thawatchai Plookphol ◽  
Jessada Wannasin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Phase Formation ◽  
Al Alloys ◽  
Al Alloy ◽  
Microstructure And Mechanical Properties ◽  
2024 Alloy ◽  
Heat Treated ◽  
Semi Solid

Semi-solid 2024 Al alloys with strontium (Sr) addition of 0.15 wt% and 0.3 wt% were prepared by Gas Induced Semi-Solid (GISS) process. Effect of Sr addition on the microstructure and mechanical properties of the semi-solid 2024 alloy was investigated. It was found that the tensile strength and % elongation of the T6 heat treated alloy with the Sr addition were higher than those without Sr addition owing to the reduction of Mg2Si phase formation. The semi-solid 2024 Al alloy with 0.15%Sr addition obtained the average highest tensile strength of 382 MPa and elongation of 6.45%.

Improvement in physical and mechanical properties of aluminum/zircon composites fabricated by powder metallurgy method

2011 ◽  
Vol 32 (8-9) ◽  
pp. 4417-4423 ◽  
Author(s):  
Hossein Abdizadeh ◽  
Maziar Ashuri ◽  
Pooyan Tavakoli Moghadam ◽  
Arshia Nouribahadory ◽  
Hamid Reza Baharvandi
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Physical And Mechanical Properties ◽  
Powder Metallurgy Method
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