نتایج جستجو برای: aluminum 1100 alloys

تعداد نتایج: 96517  

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...

In this research the effects of; increasing the amount of nickel and adding aluminum to create and prolong sulfidation resistance of Fe-Ni-Cr alloys have been investigated. Sulfidation tests were carried out at 1100°C in S/O bearing atmosphere. Prior to the tests, the specimens were annealed in argon at 1250°C for 8 hrs. Weight changes were measured and corroded deposits were analyzed byscannin...

2008
David C. Dunand

Mechanical Properties and Microstructure of Al–Sc with Rare-Earth Element or Al2O3 Additions Richard Albert Karnesky, Jr. Aluminum alloys strengthened with coherent (L12), nanosize Al3Sc precipitates are structural materials that have outstanding strength at ambient and elevated temperatures. They are creep resistant at 300 ◦C and exhibit a threshold stress, below which creep is not measurable....

Journal: :فصلنامه علمی پژوهشی مهندسی مکانیک جامدات واحد خمینی شهر 0
mohssen motaharinezhad islamic azad university, south tehran branch, young researchers and elite club, tehran, iran. saeed shahraki faculty of mechanical engineering, faculty of engineering, university of zabol

in this paper, the accumulative channel-die compression bounding (accb) method is investigated as a new method of severe plastic deformation to produce nano-crystalline bulk metals on the basis of pressing in a channel mold. aluminum as one of the most usable metal in industry is processed using this method. analyzing the processed samples show that after four passes of accb method, the ultimat...

2013
S. K. Tiwari Dinesh Kumar Shukla R. Chandra

Friction stir welding is a solid state joining process. High strength aluminum alloys are widely used in aircraft and marine industries. Generally, the mechanical properties of fusion welded aluminum joints are poor. As friction stir welding occurs in solid state, no solidification structures are created thereby eliminating the brittle and eutectic phases common in fusion welding of high streng...

2003
Zaki Ahmad

Scandium-reinforced aluminum alloys represent a new generation of high-performance alloys that display numerous advantages over high-strength aluminum alloys. Scandium-reinforced alloys are much stronger than other high-strength alloys, exhibit significant grain refinement, strengthen welds, and eliminate hot cracking in welds. These alloys also exhibit a good resistance to corrosion as shown b...

2012
R. S. Rana Rajesh Purohit

In recent year’s aluminum and aluminum alloys are widely used in automotive industries. These are light weight (density of about 2.7g/cc),having good malleability and formability, high corrosion resistance and high electrical and thermal conductivity. High machinability and workability of aluminum alloys are prone to porosity due to gases dissolved during melting processes. However, in the engi...

2016
Huihui Yang Yanling Wang Xishu Wang Pan Pan Dawei Jia Filippo Berto

The effects of corrosive media on rotating bending fatigue lives (the cyclic numbers from 104 to 108) of different aluminum alloys were investigated, which involved the corrosion fatigue lives of five kinds of aluminum alloys in air, at 3.5 wt. % and 5.0 wt. % NaCl aqueous solutions. Experimental results indicate that corrosive media have different harmful influences on fatigue lives of differe...

2007
J. R. Pickens Martin Marietta

POWDER METALLURGY (P/M) technology provides a useful means of fabricating net-shape components that enables machining to be minimized, thereby reducing costs. Aluminum P/M alloys can therefore compete with conventional aluminum casting alloys, as well as with other materials, for costcritical applications. In addition, P/M technology can be used to refine microstructures compared with those mad...

2010
Jung-Moo Lee Kyung-Hyun Kim Hwa-Jung Kim Yong-Sik Ahn

Cast aluminum alloys are widely applied for the transportation industry. Alloys with silicon and magnesium as the main alloying elements are the most important of the aluminum casting alloys because of their high fluidity. However, Al-Si-Mg alloys have exhibited medium strength level at room and, especially, at elevated temperature. Recently, new casting alloys with high magnesium and silicon h...

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