Gasar多孔合金规则气孔形成的糊状区长度判据

宋群玲; 金青林

doi:10.15980/j.tzzz.2016.11.004

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Gasar多孔合金规则气孔形成的糊状区长度判据
Critical Criteria of Mushy Zone Length for Regular Pore Forming in Gasar Porous Alloy
2016年36卷第11期页码：1134-1138
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.11.004

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[1]宋群玲,金青林.Gasar多孔合金规则气孔形成的糊状区长度判据[J].特种铸造及有色合金,2016,36(11):1134-1138.

Song Qunling, Jin Qinglin. Critical Criteria of Mushy Zone Length for Regular Pore Forming in Gasar Porous Alloy[J]. Special Casting & Nonferrous Alloys, 2016,36(11):1134-1138.
[1]宋群玲,金青林.Gasar多孔合金规则气孔形成的糊状区长度判据[J].特种铸造及有色合金,2016,36(11):1134-1138. DOI： 10.15980/j.tzzz.2016.11.004.

Song Qunling, Jin Qinglin. Critical Criteria of Mushy Zone Length for Regular Pore Forming in Gasar Porous Alloy[J]. Special Casting & Nonferrous Alloys, 2016,36(11):1134-1138. DOI： 10.15980/j.tzzz.2016.11.004.

摘要

建立了规则气孔形成的糊状区长度与气泡尖端长度的理论模型

研究了合金的糊状区长度和凝固速率与Gasar多孔Cu-Cr合金的气孔结构的关系。结果表明

规则气孔形成时

糊状区长度和凝固速率均应有一适中的范围

给定凝固速率时

糊状区长度应小于气泡尖端长度。合金成分相同时

凝固速率v<vmax时

均能获得规则多孔结构。

Abstract

The critical criteria of mushy zone length and bubble tip length for formation of regular pore structure in Gasar porous alloyhave been deduced through theoretical analysis and calculation to understand effects of mushy zone length and solidification rate of alloy on pore structure of Gasar multi-pore Cu-Cr alloy.The results reveal that both mushy zone length and solidification rate should be controlled in a proper values.With a given solidification rate

the mushy zone length should be smaller than the bubble tip length

while with a given alloy composition

when the solidification rate vis less than vmax

porous structure Cu-Cr alloy can be prepared successfully.

关键词

糊状区长度气泡尖端长度规则多孔凝固速率

Keywords

Mushy Zone LengthBubble Tip LengthRegular Porous StructureSolidification Rate

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