阿曼尼沙.艾海提,吴永杰,李文博,等.Al-Ti-C-B晶种合金对Al-12Si-4Cu-2Ni-1Mg合金组织及力学性能的影响[J].精密成形工程,2022,14(1):126-132.
AMANNISA Ahat,WU Yong-jie,LI Wen-bo,et al.Effects of Al-Ti-C-B Seed Alloy on Microstructure and Mechanical Properties of Al-12Si-4Cu-2Ni-1Mg Alloy[J].Journal of Netshape Forming Engineering,2022,14(1):126-132. |
| Al-Ti-C-B晶种合金对Al-12Si-4Cu-2Ni-1Mg合金组织及力学性能的影响 |
| Effects of Al-Ti-C-B Seed Alloy on Microstructure and Mechanical Properties of Al-12Si-4Cu-2Ni-1Mg Alloy |
| 投稿时间：2021-05-06 |
| DOI：10.3969/j.issn.1674-6457.2022.01.015 |
| 中文关键词: Al-Si合金 晶种合金 显微组织 力学性能 |
| 英文关键词: Al-Si alloy seed alloy microstructure mechanical properties |
| 基金项目:山东省重点研发计划(2019GGX102013) |
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| 摘要点击次数: 1908 |
| 全文下载次数: 875 |
| 中文摘要: |
| 目的 以近共晶Al-12Si-4Cu-2Ni-1Mg合金为研究对象，对加入了Al-Ti-C-B晶种合金的Al-12Si-4Cu- 2Ni-1Mg合金的微观组织和力学性能进行分析。方法 利用金相显微镜、扫描电镜、数显布氏硬度计和万能拉伸试验机等研究Al-Ti-C-B晶种合金对该合金显微组织和力学性能的影响。利用Al-Ti-C-B晶种合金中的陶瓷颗粒对Al-12Si-4Cu-2Ni-1Mg合金进行强化，同时晶种合金中的粒子作为Al-Si多元合金中α-Al的有效形核衬底，可细化α-Al晶粒，并改善Al-Si多元合金中化合物的分布。结果 加入质量分数为0.5%的Al-Ti-C-B晶种合金后，Al-12Si-4Cu-2Ni-1Mg合金中的α-Al得到细化，合金中的Si相和耐热相粒子分布更加均匀，同时力学性能明显提高，高温抗拉强度和室温抗拉强度分别提高了约12.1%和5.3%。结论 适量添加Al-Ti-C-B晶种合金可有效改善Al-12Si-4Cu-2Ni-1Mg合金中耐热相的分布，使耐热相分布更为均匀，可进一步提高合金的力学性能。 |
| 英文摘要: |
| The work aims to take Al-12Si-4Cu-2Ni-1Mg alloy as object to analyze the microstructure and mechanical properties of Al-12Si-4Cu-2Ni-1Mg alloy added with Al-Ti-C-B seed alloy. The effects of Al-Ti-C-B seed alloy on microstructure and mechanical properties of the alloy were researched with metallographic microscope and scanning electron microscope, bushing hardness tester, universal tensile testing machine, etc. The Al-12Si-4Cu-2Ni-1Mg alloy was strengthened by ceramic particles in the Al-Ti-C-B seed alloy. Meanwhile, the particles in the seed alloy served as an effective nucleation substrate for α-Al in the Al-Si multi-component alloy, refining α-Al grains and improving the distribution of compounds in the Al-Si multi-component alloy. The results showed that after adding 0.5% Al-Ti-C-B seed alloy, α-Al in Al-12Si-4Cu-2Ni-1Mg alloy was refined, the distribution of Si phase and heat-resistant phase particles in the alloy was more uniform, and the mechanical properties were obviously improved. The tensile strength at high temperature and room temperature were increased by about 12.1% and 5.3% respectively. Adding proper amount of Al-Ti-C-B seed alloy can effectively improve the distribution of heat-resistant phase in Al-12Si-4Cu-2Ni-1Mg alloy, make the distribution of heat-resistant phase more uniform, and further improve the mechanical properties of the alloy. |
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