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| 1 | 铝基复合材料激光粉末床熔化增材制造研究现状显示文摘采用激光粉末床熔化技术制备铝基复合材料在航空航天、军工、交通运输等领域显示出了深远的研究前景,向铝合金引入纳米增强体的种类、引入方式以及含量对铝合金可打印性、组织、力学性能产生的影响是学者们的关注热点。本文主要总结分析了TiB2、石墨烯、TiC纳米增强体对激光粉末床熔化技术制备铝合金的晶粒形态、晶粒尺寸、相对密度、可打印性和力学性能的影响,进行了不同纳米增强体对打印态铝合金力学性能影响的对比,分析得出以TiB2为代表的纳米增强体能够提升打印态铝合金的强度、塑性,使其具有良好的综合力学性能,最后提出了该研究领域在未来的进一步发展趋势。 | 朱昌隆 王洪泽 郭利萍 唐梓珏 母杰瑞 吴一 黄洁 胡凯明 王浩伟 | 2023 | 铸造技术2023，44，7： | 1 |
| 2 | 纳米TiC-TiB2颗粒对球墨铸铁铸态组织和力学性能的影响显示文摘使用含有预制内生纳米TiC-TiB_(2)颗粒的铝基中间合金制备新型球墨铸铁,研究了双相纳米颗粒对球墨铸铁铸态组织和力学性能的影响。结果表明,纳米颗粒加人后,铸态组织中石墨球的球化率提高15.9%,平均直径减小35.8%,单位面积内数量增加66.3%。基体组织中,铁素体含量上升,珠光体层片结构得到明显细化。力学性能测试中,纳米颗粒增强球墨铸铁的硬度未发生明显变化,屈服强度提升5.2%,拉伸强度提升3%,伸长率提升32.1%,冲击韧度提升50.4%。断口形貌分析中,发现纳米颗粒的加入能够促进塑性形变,带有河流状花纹的解理平面消失,石墨球周围出现大量撕裂棱和微小韧窝,断裂机制由脆性断裂转变为韧性断裂。 | 王丙旭 胡子瑞 邱丰 胡明 崔威威 杨金林 张宇 | 2021 | 铸造技术2021，42，6： | 0 |
| 3 | Properties and Structure of PEO Treated Aluminum Alloy显示文摘Plasma electrolytic oxidation(PEO)coatings were formed on 7075 aluminum alloy in silicate-borate based electrolyte with different duty cycles.The physical and chemical properties of the PEO coatings were thoroughly investigated.The wearing and corrosion properties of the coatings were evaluated by wearing experiments and potentiodynamic polarization tests,respectively.The results showed that the micro-hardness of the coatings first increased and then decreased with the increasing duty cycle.As a results,the wearing resistance of the coatings first increased and then decreased with the increasing duty cycle.Composition analysis proved that the coatings were mainly composed ofα-Al_(2)O_(3)andγ-Al_(2)O_(3).The presence of wear scars on the worn surface morphology demonstrates that the three-body rolling was the main wear mechanism for coated specimen.The corrosion study showed that the coating formed in the mixed electrolyte with duty cycle of 80%showed the most superior corrosion resistance. | 施渊吉 WANG Yanyan CHENG Cheng 郭训忠 TENG Bingyan YU Zhaopeng LI Junwan LI Wei | 2021 | Journal of Wuhan University of Technology(Materials Science)2021，36，3： | 0 |
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