نتایج جستجو برای: friction stir processing

تعداد نتایج: 533807  

Journal: :polyolefins journal 0
amir mostafapour faculty of mechanical engineering, university of tabriz, tabriz, iran ghasem naderi faculty of polymer processing, iran polymer and petrochemical institute (ippi), tehran, iran mohammad reza nakhaei faculty of mechanical engineering, university of tabriz, tabriz, iran

in this study, thermoplastic polyolefin elastomeric (tpo) nanocomposites were fabricated by friction stir processing. the effect of different pin geometries on clay dispersion and mechanical properties of the tpo nanocomposite reinforced with 3% wt nanoclay has been first investigated. the optimum pin geometry namely threaded cylindrical pin was then used to fabricate the nanocomposites contain...

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ژورنال: روش های عددی در مهندسی (استقلال) 2018
صادقیان, بهزاد , طاهری‌زاده, ابوذر , عطاپور, مسعود ,

Friction stir welding is of the most applicable methods to join dissimilar metals. In this study, the thermal distribution during the joining of 304 stainless steel and 5083 aluminum alloy by friction stir welding method was simulated by the finite element method. Both, transient and stationary thermal solutions were used in the simulations and the two methods were compared correspondingly. To ...

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2015
Hyoungwook Lee Cheolhee Kim Jung Han Song

The effect of the microstructure heterogeneity on the tensile plastic deformation characteristic of friction-stir-welded (FSW) dual-phase (DP) steel was investigated for the potential applications on the lightweight design of vehicles. Friction-stir-welded specimens with a butt joint configuration were prepared, and quasi-static tensile tests were conducted, to evaluate the tensile properties o...

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Journal: :international journal of advanced design and manufacturing technology 0
saeid nader masoud kasiri- asgarani kamran amini morteza shamanian

in this study, friction stir spot welding (fssw) is applied to join the tial6v4 titanium alloy with 1.5 mm thickness and then the effect of rotational speed and tool dwell time on microstructure and mechanical properties is investigated. in this regard, the speed of the tool rotation was considered as 800, 1000, and 1200 rpm, as well as the tool dwell time was set at 7 and 12s. microstructural ...

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Journal: :international journal of advanced design and manufacturing technology 0
hamed aghajani derazkola department of mechanical engineering , sari branch, islamic azad university, sari, iran. majid elyasi department of mechanical engineering, babol noshiravani university of technology, iran morteza hossienzadeh department of engineering, islamic azad university of ayatollah amoli branch, iran

the aim of this article is study of tool plunge depth (tpd) effects on mechanical properties of friction stir welding of aa1100 aluminium alloy to a441 aisi steel. for this purpose the 0.1, 0.2, 0.4, and 0.6 mm tpd selected and other welding parameters kept constant. the results shows that the frictional heat increases and stir zone grain size decreases with increasing tpd at both base metals. ...

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Journal: :international journal of advanced design and manufacturing technology 0
vahiid zakeri teacher at azad university of tabriz ahad gholipoor teacher at azad university of tabriz parviz asadi teacher at azad university of tabriz

in this paper, hardness and tensile properties of welded zone of aluminum 1100 alloys by friction stir welding process was investigated and the effects of rotational and traverse speeds of tool on these parameters was studied. also the fracture cross-section of welded samples was investigated. according the results of this paper, the hardness of weld material is higher than base material and is...

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2015
Lingyu Guo Yan Liu Kechang Shen Chaoqun Song Min Yang Kibuem Kim Weimin Wang

The AA6061-T6 aluminum alloy samples including annealed Fe78Si₉B13 particles were prepared by friction stir processing (FSP) and investigated by various techniques. The Fe78Si₉B13-reinforced particles are uniformly dispersed in the aluminum alloy matrix. The XRD results indicated that the lattice parameter of α-Al increases and the preferred orientation factors F of (200) plane of α-Al reduces ...

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2011
N. Kumar R. S. Mishra

Two different aspects of the thermal stability of grains were studied – (i) thermal stability of grain structure evolution during friction stir processing (FSP), and (ii) thermal stability of grains after FSP. It was concluded that Al3(Sc,Zr) dispersoids are effective in limiting grain growth to ultrafine grained regime (UFG) by stabilizing the microstructure during FSP. The presence of these d...

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2010
R. Rai A. De H. K. D. H. Bhadeshia T. DebRoy

Friction stir welding (FSW) is a widely used solid state joining process for soft materials such as aluminium alloys because it avoids many of the common problems of fusion welding. Commercial feasibility of the FSW process for harder alloys such as steels and titanium alloys awaits the development of cost effective and durable tools which lead to structurally sound welds consistently. Material...

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ژورنال: مجله علمی-پژوهشی علوم و فناوری جوشکاری ایران 2018
Rezaei Ashtiani, H. , Shafiee, M. ,

Friction stir spot welding (FSSW) is a type of solid state welding that is used in the connection of small pieces and light metals such as aluminum alloy especially. The technical problem during melting of aluminum alloys is one of the most important reasons for developing application of friction stir welding for aluminum alloys. In this research, the effects of important processing parameters ...

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