| 半固态条件下丁二腈-水合金的稳态流变行为 |
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| 引用本文： | 张松泉,林鑫,黄卫东. 半固态条件下丁二腈-水合金的稳态流变行为[J]. 铸造, 2010, 59(7) |
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| 作者姓名： | 张松泉 林鑫 黄卫东 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室,陕西西安,710072 |
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| 基金项目： | 国家自然科学基金，新世纪优秀人才支持计划项目 |
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| 摘 要： | 采用Searle型同轴双筒剪切流变仪考察了由类金属丁二腈(SCN)和水配制的SCN-5at.%Wat.透明合金在半固态条件下的稳态流变行为。SCN-5at.%Wat.合金的稳态表观粘度表现出类似半固态金属浆料的剪切稀化现象。当冷却速率较高时,SCN-5at.%Wat.合金的稳态表观粘度随初始剪切速率的提高而减小;而当冷却速率较低时,其随初始剪切速率的提高略有增大。当初始剪切速率较低时,SCN-5at.%Wat.合金的稳态表观粘度随冷却速率的提高而增大;而当初始剪切速率较高时,其随冷却速率的提高,在较高的终了温度下表现为减小,在较低的终了温度下反而略有增大。另外,在较低初始剪切速率和较高冷却速率下,SCN-5at.%Wat.合金的稳态表观粘度总体较高。
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| 关 键 词： | 半固态 流变行为 表观粘度 冷却速率 剪切速率 |
Steady State Rheological Behavior of Semisolid SCN-5at.%Wat. Alloy |
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| ZHANG Song-quan,LIN Xin,HUANG Wei-dong. Steady State Rheological Behavior of Semisolid SCN-5at.%Wat. Alloy[J]. China Foundry, 2010, 59(7) |
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| Authors: | ZHANG Song-quan LIN Xin HUANG Wei-dong |
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| Affiliation: | ZHANG Song-quan,LIN Xin,HUANG Wei-dong (State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China) |
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| Abstract: | A Searle type rheometer was used to investigate the steady state rheological behavior of semisolid SCN-5at.%Wat. transparent alloy. The steady state apparent viscosity of semisolid SCN-5at.%Wat. alloy exhibits a shear thinning phenomenon,which is similar to that for semisolid metallic alloy slurry. The steady state apparent viscosity of semisolid SCN-5at.%Wat. alloy decreases with increasing the initial shearing rate at the high cooling rate,but increases a little with increasing the initial shearing rate a... |
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| Keywords: | semisolid state rheological behavior apparent viscosity cooling rate shearing rate |
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