Investigation of the Deflection Behavior of CZ3000 Prealloyed Powder Beam Using In-situ Bending Technique

Document Type : Original Articles

Authors

1 Sahand University of Technology

2 Young Researchers and Elite Club, Ahar Branch

Abstract

The viscosity of the sample decreases with an increase in fraction of the liquid phase. Beam bending test is the technique used for measuring viscosity. In this paper, an investigation of the deflection behavior of Cu-28Zn beams at various temperatures and times ranging from 910 to 950 °C and 0 to 90 minutes was studied. The midpoint deflection was measured by in situ bending images. It is concluded that deflection of brass beam as a function of temperature is linear and is nonlinear in the case of time. This is due to zinc evaporation that effects the chemical composition and liquid volume fraction.

Keywords


1- Mohammadzadeh A., Azadbeh M., Danninger H., "New concept in analysis of supersolidus liquid phase sintering of alpha brass", Powder Metallurgy, In press, DOI: http:// dx.doi.org /10.1179/1743290114Y.0000000114, (2014).
2- German R.M., "Supersolidus Liquid Phase Sintering of Prealloyed Powders", Metallurgical and Materials Transactions A, Vol. 28, pp. 1553-1567, (1997).
3- Liu Y., Tandon R., German R.M., "Modeling of Supersolidus Liquid Phase Sintering, Part I: Capillary Force", Metallurgical and Materials Transactions A, Vol. 26 (A), pp. 2415-2422, (1995).
4- Lal A., German R.M., "The Role of Viscosity During Supersolidus Liquid Phase Sintering", Advances in Powder Metallurgy and Particulate Materials, pp. 169-182, (2000).
5- Bollina R., German R.M., "In Situ Evaluation of Viscosity During Sintering of Boron Doped Stainless Steel Using Bending Beam Technique", Euro PM 2004 Sintering, Materials Research Institute Pennsylvania State University, University Park, PA, (2004).
6- Upadhyaya G.S., "Sintered metallic and ceramic materials: preparation, properties and applications", Wiley, New York, (1999).
7- Sabahi Namini A., Azadbeh M., Mohammadzadeh A., "Microstructure and Densification Behavior of Liquid Phase Sintering Cu-28Zn Prealloyed Powder", Science of Sintering, Vol. 45, pp. 351-362, (2013).
8- Mohammadzadeh A., Azadbeh M., Namini A., "Densification and Volumetric Change During Supersolidus Liquid Phase Sintering of Prealloyed Brass Cu28Zn Powder: Modeling and Optimization", Science of Sintering, Vol. 46, pp. 23-35, (2014).
9- Terletskii V.E., "Investigation of Conditions of Production of Brass Powders and of the Sintering of Parts from Them", Author's Abstract of Candidate's Dissertation, Kiev, (1972).
10- Palmer E., Grimme D., "Investigation of the Possibility of Production of P/M Brass Parts, New Materials Produced by Powder Metallurgy Methods [Russian Translation]", Metallurgy, Moscow, pp. 137-146, (1966).
11- قارونی جعفری م.، آزادبه م.، محمدزاده ا.، سلیمان‌نژاد باری ع.، " بررسی تغییرات خواص فیزیکی و مکانیکی آلیاژ Cu-20Zn نسبت به دمای تف‌جوشی"، همایش ملی مهندسی مواد، دانشگاه ملایر، (1391).
12- صباحی ع.، آزادبه م.، "بررسی خواص فیزیکی و مکانیکی آلیاژ Cu-20Zn تولید شده از پودر پیش‌آلیاژی به تغییرات جزیی دمای تف‌جوشی"، فصل‌نامه‌ی علمی پژوهشی مهندسی مواد مجلسی، سال چهارم شماره 2، (1389).
13-Dovydenkova I.V., Radomyselskii I.D., "Production and Properties of Constructional Parts from Copper and Copper Alloy Powders: A review", Poroshk. Metall, Vol. 3 (255), pp. 56-64, (1984).
14-Azadbeh M., Danninger H., Gierl-Mayer C., "Macroscopic illustration of Zn evaporation during liquid phase sintering of Cu-28Zn prepared from prealloyed powder", Sintering, Atmosphere and Atmosphere Control, Euro PM, Manuscript refereed by Prof Francisco Castro, (2013). 
CAPTCHA Image