| 喷射沉积Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg合金组织与性能 |
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| 引用本文： | 时海芳,曲博林,袁晓光.喷射沉积Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg合金组织与性能[J].特种铸造及有色合金,2009,29(11). |
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| 作者姓名： | 时海芳 曲博林 袁晓光 |
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| 作者单位： | 1. 沈阳工业大学材料科学与工程学院;辽宁工程技术大学材料科学与工程学院
2. 沈阳工业大学材料科学与工程学院 |
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| 摘 要： | 采用喷射沉积快速凝固技术制备了Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg合金,利用金相、XRD、SEM等测试方法分析了合金的组织特征、热稳定性及力学性能.结果表明,喷射沉积合金的组织由大量弥散分布的粒状相,少量块状相和共晶基体组成.合金在150、250、350 ℃下不同时间加热后,初晶Si没有明显的粗化.证明其在350 ℃下具有良好的热稳定性.合金经热处理后,室温抗拉强度达373 MPa.
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| 关 键 词： | 喷射沉积 Al-Si合金 显微组织 耐热性 |
Microstructure and Properties of Spray Deposited Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg Alloy |
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| Shi Haifang,Qu Bolin,Yuan Xiaoguang.Microstructure and Properties of Spray Deposited Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg Alloy[J].Special Casting & Nonferrous Alloys,2009,29(11). |
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| Authors: | Shi Haifang Qu Bolin Yuan Xiaoguang |
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| Abstract: | Microstructure, thermal stability and mechanical properties of spray-deposited prepared Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg alloy were investigated by OM (optical microscope), XRD (X-ray diffraction) and SEM (scanning electron microscope). The results reveal that the microstructure of the alloy is composed of lots of dispersed granular phase, a little block-like phase and eutectic matrix. Obvious coarseness of primary Si phase can not be observed in the alloy with different heating time at 150℃, 250℃ and 350℃, respectively, which verifies that the alloy exhibits desirable thermal stability at below 350℃. Ultimate tensile strength of the as-extruded alloy after T6 treatment reaches 373MPa at room temperature. |
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| Keywords: | Spray-deposition Al-Si Alloy Microstructure Thermal Stability |
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