Effect of Y additions on the solidification behavior of a copper mold cast CuZrAl alloy with high oxygen content
Creators
- Coury, F.G.1
- Batalha, W.1
- Botta, W.J.1
- Bolfarini, C.1
- Kiminami, C.S.1
- Kaufman, M.J.2
- Associacao Brasileira de Ceramica (ABCERAM), Sao Paulo, SP (Brazil)
- Associacao Brasileira de Metalurgia, Materiais e Mineracao (ABM), Sao Paulo, SP (Brazil)
- Associacao Brasileira de Polimeros (ABPol), Sao Carlos, SP (Brazil)
- 1. Universidade Federal de Sao Carlos (UFSCar), SP (Brazil). Departamento de Engenharia de Materiais
- 2. Department of Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO (United States)
Description
Bulk glassy samples of the CuAlZr system were produced by copper mold casting in the form of wedges with different amounts of yttrium (0 , 0.3 and 2 at%) , the processing conditions led to high oxygen contents on the samples (1000ppm). A reportedly good glass-former composition was chosen as the base alloy, it's nominal composition is Cu47Zr45Al8. This study aimed to understand the influence of oxygen and yttrium in the solidification of these alloys. The samples were analyzed by scanning and transmission electron microscopy, differential scanning calorimetry and X-Ray diffraction. The sequence of formation of crystalline phases in these alloys was determined as a function of the different cooling rates inherent in the process. It was observed that the formation of CuZr2 phase was inhibited in samples with Y allowing the production of a fully glassy 8mm. (author)
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48050333.pdf
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Additional details
Additional titles
- Original title (Portuguese)
- Efeito de adicoes de Y na solidificacao de ligas metalicas vitreas de grande volume do sistema CuZrAl com altos teores de oxigenio
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- INIS-BR--17613
Conference
- Title
- Brazilian congress of engineering and materials science
- Original Conference Title
- 21. CBECIMAT: congresso brasileiro de engenharia e ciencia dos materiais
- Acronym
- 21. CBECIMAT
- Dates
- 9-13 Nov 2014
- Place
- Cuiaba, MT (Brazil)
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 48050333
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALORIMETRY; CASTING MOLDS; COOLING; COPPER; CRYSTAL STRUCTURE; METALLIC GLASSES; OXYGEN; SCANNING ELECTRON MICROSCOPY; SOLIDIFICATION; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; YTTRIUM; ZIRCONIUM
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; METALS; MICROSCOPY; NONMETALS; PHASE TRANSFORMATIONS; SCATTERING; TRANSITION ELEMENTS