1,723,917 research outputs found
Allen, R, 5182
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/368241Surname: ALLEN
Given Name(s) or Initials: R
Military Service Number or Last Known Location: 5182
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 53933178287
Item: [2016.0049.00572] "Allen, R, 5182
Effect of Intermediate Annealing on Microstructure and Property of 5182 Aluminum Alloy Sheet for Automobile
No full textEffect of intermediate annealing on the microstructure and properties of 5182 aluminum alloy sheet with full annealed state (5182-O) was investigated by means of optical microscope, scanning electron microscope and universal testing machine. The results indicate that compared with 5182-O sheet without intermediate annealing, 5182-O sheet with intermediate annealing possesses too fine grain size, intermetallic compounds not broken enough, larger size intermetallic particles, less dispersed phase. Yield strength and ultimate tensile strength, work hardening exponent and normal anisotropy of plastic strain ratio decrease but planner anisotropy of plastic strain ratio increases. The mechanical properties and forming ability of 5182-O aluminum alloy sheet and its microstructure are not improved significantly after intermediate annealing
., Br J Pharmacol 171: 5182–5194
Get PDFLinked articleThis article is a Commentary on Kisselbach J, Seyler C, Schweizer PA, Gerstberger R, Becker R, Katus HA and Thomas D (2014). Modulation of K2P2.1 and K2P10.1 K+ channel sensitivity to carvedilol by alternative mRNA translation initiation. Br J Pharmacol 171: 5182-5194. doi: 10.1111/bph.12596
Strain path diagram simulation of AA 5182 Aluminum alloy
No full textAbstractAluminum alloys are most promising material in automotive applications due to its light weight and high strength to weight ratio. However, its formability is low when compared to automotive steels. The present paper deals with formability analysis of AA 5182 using different simulation parameters. The simulated strain path diagram (SPD) of AA 5182 was plotted using different element (mesh) sizes and hardening laws. It has been found that effect of mesh size is prominent in SPD simulation. Also a strong trend was found when hardening law was changed. The variation of strains with dome height is also studied
Effects of Ce-Rich Mischmetal on Microstructure Evolution and Mechanical Properties of 5182 Aluminum Alloy
No full textThis paper addresses the effects of Ce-rich mischmetal on the microstructure evolution of a 5182 aluminum alloy during annealing and rolling processes. The Ce-rich mischmetal was added to an as-cast 5182 aluminum alloy in an induction furnace, and this was followed by homogenized annealing at 450 °C for 24 h and a rolling operation. The microstructure evolution and mechanical properties’ analysis of the 5182 Al alloy were characterized. The results show that the Ce-rich mischmetal could modify the microstructure, refine the α-Al grains, break the network distribution of Mg2Si phases, and prevent Cr and Si atoms from diffusing into the Al6(Mn, Fe) phase in the as-cast 5182 Al alloys. Ce-rich mischmetal elements were also found to refine the Al6(Mn, Fe) phase after cold rolling. Then, the refined Al6(Mn, Fe) particles inhibited the growth of recrystallization grains to refine them from 10.01 to 7.18 μm after cold rolling. Consequently, the tensile strength of the cold-rolled 5182 Al alloy increased from 414.65 to 454.34 MPa through cell-size strengthening, dislocation density strengthening, and particle strengthening. The tensile strength of the recrystallization annealed 5182 Al alloy was increased from 322.16 to 342.73 MPa through grain refinement strengthening, and this alloy was more stable after the recrystallization annealing temperature
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Determination Of Formability Behaviours Of 5052 And 5182 Aluminium Alloys Produced By Continuous Casting Method
No full textTez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2003Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2003Bu çalışmada, Twin-Roll Casting metoduyla 5 mm kalınlığında dökülmüş ve 1 mm kalınlığa soğuk haddelenerek endüstriyel ortamda tavlanmış yüksek magnezyumlu iki alüminyum alaşımının (5052-5182) şekillenme kabiliyetleri yapılan çeşitli mekanik deneylerle çizilen şekillendirme sınır diyagramları yardımıyla deneysel çalışmalar yardımı ile incelenmiştir. Yapılan deneysel çalışmalarda, 5182 (%4,4 Mg) alaşımının, 5052 (%2,6 Mg) alaşımına göre daha yüksek mukavemet, Erichsen, dikey anizotropi ve deormasyon sertleşmesi üssü (n) değerlerine sahip olduğu saptanmıştır. Düzlemsel anizotropi katsayıları karşılaştırıldığında iki alaşım arasında belirgin bir farkın olmadığı tespit edilmiştir. Yapılan çekme deneylerinde, her iki alaşımda da plastik deformasyon sırasında dinamik deformasyon yaşlanması görülmüştür. Döküm mikroyapıları incelendiğinde, her iki yapıda da merkez hattı segregasyonuna rastlanmıştır. Homojen tavlanan numunelerin kesitlerinde dış yüzeylerde ince tane yapısı, iç bölgelere doğru daha kaba tane yapısına rastlanmıştır. Her iki alaşımın nihai kalınlıkta çekme numuneleri kırılma yüzeyleri taramalı elektron mikroskobunda incelendiğinde, sünek kırılmayı temsil eden oyuklu kırılma yüzeylerine rastlanmıştır. Hidrolik şişirme ve çentik çekme testleri ile oluşturulan Şekillendirme Sınır Diyagramlarından, 5182 alaşımının 5052 alaşımına göre daha iyi şekillendirilebilirlik gösterdiği tespit edilmiştirIn this study, the formability behaviours of two 5xxx quality aluminium alloys (5052 and 5182) which cast by twin roll casting method in approximately 5 mm thickness then cold rolled to 1 mm and finally annealed condition were investigated. From the mechanical test results, it was determined that 5182 quality aluminium alloy has higher strength, Erichsen, normal anisotrophy and strain hardening exponent (n) values than 5052 quality aluminium alloy. From the planar anisotrophy values, it was also determined that 5052 quality aluminium alloy has approximately no earing behaviour, whereas 5182 aluminium alloy has earing behaviour at the direction of 450. At the tensile tests of the both aluminium alloys the dynamic strain aging behaviour was observed. The ductility values of these two alloys were close each other. At the metallographic examinations, it was observed that these two aluminium alloys have center-line segregation. At the same time, after homogenisation of cast microstructures, the grain structures changed from surface as fine grains toward to center as coarse grains. Scanning electron microscope examinations of the fracture surfaces of the tensile specimens of both alloys showed ductile fracture characteristics such as dimpled fracture surfaces. Forming limit diagrams of these two aluminium alloys were obtained from hydraulic bulge and notched tensile tests to compare formability behaviours. It is found that 5182 aluminium alloy has better formability than 5052 aluminium alloy.Yüksek LisansM.Sc
Thixo-extrusion of 5182 Aluminium Alloy
No full textExtrusion is a well established technology for the production of complex sections of aluminium alloys. Thixo-extrusion in comparison to traditional hot-extrusion offers several advantages such as lower extrusion and friction forces, higher material fluidity, longer tool life etc. Aluminium alloy 5182 is an important commercial alloy characterized by high strength and ductility, high corrosion resistance and good formability; it is commonly used for the production of wrought automotive components and it is also suitable for semi-solid applications thanks to its wide solidification range. The aim of this paper is to attempt the shaping of 5182 Al-Mg alloy through the thixo-extrusion process using a ceramic tool and evaluating the effect of different routes of making the feedstock on the semisolid microstructure. Particularly, two different methods were investigated: Near-solidus casting and Roll-casting using a cooling slope. All the samples produced were characterized by metallographic analysis in order to measure globule size and shape factor, as the main criteria used for assessing thixo-formability
- …
