EFFECT OF ALLOYING ADDITIONS ON THE SUPERPLASTICITY OF BIPHASE BRASS.

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作者：

Portnoi, V.K.

Levchenko, V.S.

Kuin', Nguen Ngok

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来源：

Metal Science and Heat Treatment (English Translation of Metallovedenie i Termicheskaya Obrabotka | 1986年 / 28卷 / 11-12期

关键词：

COPPER METALLOGRAPHY - Microstructures - METALLOGRAPHY - Grain Size and Shape;

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摘要：

Brass with ( alpha plus beta ) structure has a relative elongation that is comparatively small for biphase alloys. This imposes certain limits on the superplastic forming of complex parts made from sheet blanks. The small elongation in superplastic deformation is due to grain growth and pore formation. The authors investigated the effect of additions of Cr, Mg, Mn, Zr, Ti, Ni, Sn, Si, Al, and Fe. The use of small additions ensuring smaller grain size and slower grain growth, improving the equiaxiality of the grains and reducing diffusional porosity controls the indices of superplasticity.

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页码：794 / 801