| 细晶硅粒子对快速凝固高硅铝合金性能的影响 |
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| 引用本文： | 胡锐,勾宏图,郑来苏,商宝禄.细晶硅粒子对快速凝固高硅铝合金性能的影响[J].机械科学与技术(西安),2002,21(5):813-814,819. |
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| 作者姓名： | 胡锐 勾宏图 郑来苏 商宝禄 |
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| 作者单位： | [1]西北工业大学凝固技术国家重点实验室，西安710072 [2]河南新机股份有限公司，新乡453002 |
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| 基金项目： | 航空基础科学基金项目 (94G5 3 12 2 )资助 |
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| 摘 要： | 对喷雾沉积法制取 Al- 2 8Si- Cu- Mg- Ni- Fe合金进行了研究 ,探讨了冷却速率与合金组织的关系 ,着重分析了快凝合金中自生细化硅粒子的强度增强机制及影响因素 ,认为硅晶体的增强作用是 Orowan机制和颗粒增强机制复合强化的结果 ,所得的材料为 :Si粒子尺寸约 6 μm,σb=381MPa,σb30 0℃=191MPa。
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| 关 键 词： | 喷雾沉积 高硅铝 强化机制 自生复合材料 |
| 文章编号： | 1003-8728(2002)05-0813-02 |
Influence of Fine Crystal Silicon Particles on the Properties of Rapidly-Solidified High Silicon Al Alloy |
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| HU Rui ,GOU Hong tu ,ZHENG Lai shu ,SHANG Bao lu.Influence of Fine Crystal Silicon Particles on the Properties of Rapidly-Solidified High Silicon Al Alloy[J].Mechanical Science and Technology,2002,21(5):813-814,819. |
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| Authors: | HU Rui GOU Hong tu ZHENG Lai shu SHANG Bao lu |
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| Affiliation: | HU Rui 1,GOU Hong tu 2,ZHENG Lai shu 1,SHANG Bao lu 1 |
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| Abstract: | This paper studied the microstructure and properties of Al 28Si Cu Mg Ni Fe alloy made by the spray deposited method, the relationship between the cooling rate and the microstructure was discussed. The strengthening mechanisms of in situ forming fine silicon particles in the rapidly solidified alloy and several influence factors were investigated in detail.We deem that the strengthened mechanism of silicon crystals is the result of the Orowan mechanism and particle strengthened mechanism. Properties of the material are as follows: silicon particle size is about 6 μm,σ b=381 MPa,σ b 300℃ =191 MPa? |
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| Keywords: | Spray deposited method High silicon Al alloy Strengthening mechanism In situ composites |
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