时春燕,王春霞,吴光辉,谭小生,黄章崎,张玉清.轧制成形与挤压成形2A12铝合金硬质阳极氧化膜性能对比研究[J].表面技术,2019,48(3):178-184.
SHI Chun-yan,WANG Chun-xia,WU Guang-hui,TAN Xiao-sheng,HUANG Zhang-qi,ZHANG Yu-qing.Comparative Study on Properties of 2A12 Aluminum Alloy Hard Anodized Film by Roll Forming and Extrusion[J].Surface Technology,2019,48(3):178-184 |
| 轧制成形与挤压成形2A12铝合金硬质阳极氧化膜性能对比研究 |
| Comparative Study on Properties of 2A12 Aluminum Alloy Hard Anodized Film by Roll Forming and Extrusion |
| 投稿时间：2018-07-25 修订日期：2019-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.03.025 |
| 中文关键词: 轧制成形 挤压成形 金相分析 硬质阳极氧化膜 硬度 耐蚀性 耐磨性 |
| 英文关键词:rolling and extrusion molding metallographic analysis hard anodic oxide film hardness corrosion resistance wear resistance |
| 基金项目:南昌航空大学研究生创新专项资金（YC2017007） |
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| Author | Institution |
| SHI Chun-yan | School of Materials Science and Engineering, Nanchang Aeronautical University, Nanchang 330063, China |
| WANG Chun-xia | School of Materials Science and Engineering, Nanchang Aeronautical University, Nanchang 330063, China |
| WU Guang-hui | School of Materials Science and Engineering, Nanchang Aeronautical University, Nanchang 330063, China |
| TAN Xiao-sheng | School of Materials Science and Engineering, Nanchang Aeronautical University, Nanchang 330063, China |
| HUANG Zhang-qi | School of Materials Science and Engineering, Nanchang Aeronautical University, Nanchang 330063, China |
| ZHANG Yu-qing | School of Materials Science and Engineering, Nanchang Aeronautical University, Nanchang 330063, China |
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| 中文摘要: |
| 目的 通过对轧制成形与挤压成形2A12铝合金金相组织结构与成分的对比研究，获得两种成形方式下的铝合金经过硬质阳极氧化后膜层性能产生差异的原因。方法 利用Keller试剂腐蚀基材试样，通过金相显微镜观察腐蚀形貌并分析结构差异。利用场发射电子显微镜、能谱仪、显微硬度计、Tafel极化曲线和摩擦磨损试验仪，对轧制成形与挤压成形2A12铝合金基材组织结构及氧化膜的微观形貌、成分、硬度、耐蚀性和耐磨性进行分析。结果 挤压成形2A12铝合金内部组织析出相破碎程度较大，存在大量微孔以及由于析出相脱落而残留的坑洞，而轧制成形2A12铝合金组织结构较为致密平整，其制备的硬质阳极氧化膜厚度为66.03 μm，硬度为457.26 HV，粗糙度为0.98 μm，磨损量为0.0149 mg，比挤压成形2A12铝合金制备的氧化膜厚度高出4.11 μm，硬度高出221.10HV，粗糙度降低了0.94 μm，磨损量低0.7208 mg。结论 2A12铝合金经过轧制成形后，其内部组织更均匀致密，析出相破碎率低，在相同工艺条件下，制备的硬质阳极氧化膜综合性能更优异。 |
| 英文摘要: |
| The work aims to find out the reasons for the difference of film properties after hard anodic oxidation of aluminum alloy under the two forming ways by comparing the metallographic structure and composition of 2A12 aluminum alloy formed by rolling and extrusion. Keller reagent was used to corrode the substrate specimen, the corrosion morphology was observed by metallographic microscope and the structural differences were analyzed. Field emission electron microscope, energy spectrometer, microhardness tester, Tafel polarization curve and friction and wear tester were applied to analyze the organization structure, microstructure, composition, hardness, corrosion resistance and wear resistance of 2A12 aluminum alloy substrate formed by rolling and extrusion. The precipitated phase inside the extruded 2A12 aluminum alloy metallographic structure was broken to a large extent, and had a large number of micropores and residual pits due to the precipitated phase falling off. However, the rolled 2A12 aluminum alloy had a compact and flat structure, and the thickness of hard anodic oxide film was 66.03 μm, hardness was 457.26HV, roughness was 0.98 μm and abrasion loss was 0.0149 mg, which were respectively 4.11 μm higher than the thickness of the oxide film prepared by extrusion 2A12 aluminum alloy, 221.10 HV higher for the hardness, 0.94 μm lower for the roughness, and 0.7208 lower for the abrasion loss. 2A12 aluminum alloy formed by rolling has more uniform and compact internal structure, and low broken rate of precipitated phase. Under the same process conditions, the prepared hard anodic oxide film has better comprehensive performance. |
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