| 喷射成型高硅铝合金的致密化研究 |
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| 引用本文： | 朱奇林,曹福洋,吴成龙.喷射成型高硅铝合金的致密化研究[J].汽车技术,2007(11):48-51. |
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| 作者姓名： | 朱奇林 曹福洋 吴成龙 |
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| 作者单位： | 1. 安徽江淮汽车股份有限公司
2. 哈尔滨工业大学 |
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| 摘 要： | 研究了采用墩粗和热挤压工艺对喷射成型高硅铝合金进行致密化后其组织的变化,以及挤压比对喷射成型高硅铝合金组织的影响。研究结果表明,墩粗和热挤压消除了沉积态高硅铝合金组织内部空隙,得到了均匀、晶粒细小的微观组织。作为发动机缸套材料的喷射成型高硅铝合金经致密化处理后,机械性能改善且耐磨性提高,从而提高了缸套的使用寿命。
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| 关 键 词： | 高硅铝合金 致密化 热挤压 |
| 文章编号： | 1000-3703（2007）11-0048-04 |
Densification Investigation of Spray Formed Hypereutectic Silicon-Aluminum Alloys |
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| Zhu Qilin,Cao fuyang,Wu Chenglong.Densification Investigation of Spray Formed Hypereutectic Silicon-Aluminum Alloys[J].Automobile Technology,2007(11):48-51. |
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| Authors: | Zhu Qilin Cao fuyang Wu Chenglong |
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| Institution: | 1.Anhui Jianghuai Auto Co. Ltd.;2.Harbin Industry University |
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| Abstract: | The microstructure changes of spray formed hypereutectic Silicon-Aluminum alloys are studied by using pier-thick and hot extrusion technology,and study the influence between extrusion and spray formed hypereutectic Silicon-Aluminum alloys.It is shown that,inner holes of deposited hypereutectic Silicon-Aluminum alloys are eliminated by pier-thick and extrusion process,and uniform microstructure with small grain is obtained.The spray formed hypereutectic Silicon-Aluminum alloys as engine cylinder sleeve after densification,the mechanical character and the abradability have enhanced, so the operating life of cylinder sleeve has improved. |
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| Keywords: | Hypereutectic Silicon-Aluminum alloys Densification Hot extrusion |
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