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228篇 您的检索式:作者名="Apelian"
    题名 作者 年代 出处 被引量
121世纪的工程教育重构显示文摘工程教育与产业正面临着新挑战。有人认为这是工程教育的危机,也有人认为这是我们步入21世纪为工程教育带来的机遇。客观地讲,没有人对工程教育的现状以及短期内面临的问题十分满意。正如狄更斯在《双城记》开头中写到,“现在是最好的时候,也是最糟的时刻”。Gretar Tryggvason Diran Apelian 查建中 冯磊 2008中国大学教学2008,,12:8
2Effect of mixing rate and temperature on primary Si phase of hypereutectic Al-20Si alloy during control ed diffusion solidification(CDS) process显示文摘Controlled Diffusion Solidification(CDS) is a promising process relied on mixing two liquid alloys of precisely controlled chemistry and temperature in order to produce a predetermined alloy composition. In this study, the CDS was employed to prepare hypereutectic Al-20%Si(mass fraction) alloy using Al-30%Si and pure Al of different temperatures. The mixing rate was controlled using three small crucibles with a hole of different diameters in their bottom. The effect of mixing rate and temperature on the microstructure of the primary Si-phase during the mixing of molten Al and Al-30%Si was studied. The results showed that when the diameter of the small crucible bottom hole is 16 mm, a higher mass mixing rate 0.217 kg·s-1 would results in a lower stream velocity 0.414 m·s-1. Conversely a lower mass mixing rate 0.114 kg·s-1(the diameter of the small crucible bottom hole is 8 mm) would result in a higher fluid stream velocity 0.879 m·s-1. A lower mass mixing rate would be better to refine the primary Si than a higher mass mixing rate. Meanwhile, the morphology and distribution of primary Si could also be improved. Especially, when Al-30%Si alloy at 820 °C was mixed with pure Al at 670 °C in the case of a mass mixing rate of 0.114 kg·s-1 and a pouring temperature of 680 °C, the average size of the primary Si phase would be only 18.2 μm. Its morphology would mostly be octahedral and the primary Si would distribute uniformly in the matrix microstructure. The lower mass mixing rate(0.114 kg·s-1) will enhance the broken tendency of Al-30%Si steam and the mixing agitation of resultant melt, so the primary Si phase can be better refined.Yuan-dong Li Xin-long Zhang Ying Ma Diran Apelian Hong-wei Zhou Xing-hai Liu 2015China Foundry2015,12,3:5
3Fatigue crack growth characteristics in cast Al-Si-Mg alloys I : Effect of processing conditions and microstructure 显示文摘Lados D A Apelian D 2004Materials Science and Engineering2004,385,:1
4Casting of aluminum based wrought alloys using controlled diffusion solidification显示文摘Saha D Shankar H Apelian D 2004Metallurgical and Materials Transactions2004,35,7:1
5Fatigue behavior of A356-T6 aluminum cast alloys-Part Ⅱ:Effect of microstructural constituents显示文摘Wang Q G Apelian D Lados D A 2001Journal of Light Metals2001,1,:1
6Fatigue crack growth characteristics in cast Al-Si-Mg alloys II : Life predictions using fatigue crack growth data 显示文摘Lados D A Apelian D 2004Materials Science and Engineering2004,385,:1
7Al-Si Processing variables: effect on grain refinement and eutectic modification 显示文摘Apelian Cheng J J 1986AFS Transections1986,94,:1
8Relationships between microstructure and fatigue crack propagation paths in Al-Si-Mg cast alloys 显示文摘Lados D A Apelian D 2008Engineering FraetureMechanics2008,75,34:1
9Fatigue behavior ofA356/357 aluminum cast alloys II : Effect of microstructural constituents 显示文摘Wang Q G Apelian D Lados D A 2001JoumalofLightMetals2001,1,1:1
10Fatigue behavior of A356/357 aluminum cast alloys(part Ⅱ):Effect of microstructural constituents显示文摘Wang Q G Apelian D Lados D A 2001Journal of Light Metals2001,1,1:1
11Thermal plasma materialistic processing-applications and opportunities 显示文摘Smith R W Apelian D Wei D 1989J Plasma chem1989,9,1:1
12Aging behavior in cast Al-Si-Mg alloys显示文摘SHIVKUMAR S KELLER C APELIAN D 1990AFS Transactions1990,98,:1
13Spray casting:an integral model for process understanding and control显示文摘Mathur P Annavarapu S Apelian D 1991Mater Sci and Eng1991,42,:1
14The influence of molten metal processing on mechanical properties of cast Al-Si-Mg alloys 显示文摘Sigworth G K Shivkumer S Apelian D 1989AFS Transaction1989,97,:1
15Low cost and energy efficient methods for the manufacture of semi-solid (SSM) feedstock显示文摘Apelian D Pan Q Y Findon M 2004Die Casting Engineer2004,48,1:1
16Assessment of grain refinement and modification of Al-Si foundry alloys by thermal analysis显示文摘Apelian D Sigworth G K Whaler K 1984AFS Transactions1984,92,:1
17Prediction of drug release from hydroxypropyl methylcelluiose(HPMC)matrices:Effect of polymer concentration显示文摘Shah N Zhang G H Apelian V 1993Pham Res1993,10,11:1
18The Influence of Molten Metal Processing on Mechanical Properties of Cast Al-Si-Mg Alloys显示文摘Sigworth G K Shivkumar S D Apelian 1989AFS Transactions1989,97,:1
19CDS method for casting aluminium-based wrought alloy compositions: theoretical framework 显示文摘Apelian D Makhlouf M Saha D 2006Materials Science Forum2006,519,521:1
20Relationships between mierostructure and fatigue crack propagation paths in A1 - Si - Mg cast alloys 显示文摘LADOS DIANA A APELIAN Diran 2008Engineering Fracture Mechanics2008,75,:1
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