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Microstructural changes induced by ternary additions in a hypo-eutectic titanium-silicon alloy.(Author abstract)

Saha, R. L. ; Nandy, T. K. ; Misra, R. D. K. ; Jacob, K. T.

Journal of Materials Science, May, 1991, Vol.26(10), p.2637 [Tạp chí có phản biện]

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Nhan đề:
Microstructural changes induced by ternary additions in a hypo-eutectic titanium-silicon alloy.(Author abstract)
Tác giả: Saha, R. L. ; Nandy, T. K. ; Misra, R. D. K. ; Jacob, K. T.
Chủ đề: Specialty Metals Industry
Là 1 phần của: Journal of Materials Science, May, 1991, Vol.26(10), p.2637
Mô tả: Byline: R. L. Saha (1), T. K. Nandy (1), R. D. K. Misra (1), K. T. Jacob (2) Abstract: Hypo-eutectic Ti-6.5 wt % Si alloy modified by separate additions of misch metal and low surface tension elements (Na, Sr, Se and Bi) has been examined by microscopic study and thermal analysis. Addition of third element led to modification of microstructure with apparently no significant enhancement of tensile ductility, with the exception of bismuth. Bismuth enhanced the ductility of the alloy by a factor of two and elastic-plastic fracture toughness to 9 MPa m.sup.-1/2 from a value of almost zero. The improved ductility of bismuth modified alloy is attributed to the reduced interconnectivity of the eutectic suicide, absence of significant suicide precipitation in the eutectic region and increase in the volume fraction of uniformly distributed dendrites. These changes are accompanied by a decrease in the temperature of eutectic solidification. Author Affiliation: Article History: Registration Date: 13/10/2004 Received Date: 10/01/1990 Accepted Date: 16/05/1990
Ngôn ngữ: English
Số nhận dạng: ISSN: 0022-2461

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