熔体深过冷过共晶铝硅合金的凝固组织研究

doi:10.11896/cldb.21100123

材料导报

2023, Vol. 37

Issue (12): 21100123-6 https://doi.org/10.11896/cldb.21100123

金属与金属基复合材料

熔体深过冷过共晶铝硅合金的凝固组织研究

周涵^1,2, 刘亚^1,2, 吴长军^1,2, 王建华^1,2,*, 苏旭平^1,2

1 常州大学江苏省材料表面科学与技术重点实验室,江苏常州 213164
2 常州大学江苏省光伏科学与工程协同创新中心,江苏常州 213164

Study on Solidification Microstructure of Melt Supercooled Hypereutectic Al-Si Alloy

ZHOU Han^1,2, LIU Ya^1,2, WU Changjun^1,2, WANG Jianhua^1,2,*, SU Xuping^1,2

1 Key Laboratory of Materials Surface Science and Technology of Jiangsu Province, Changzhou University, Changzhou 213164, Jiangsu, China
2 Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China

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摘要本工作采用熔体急冷装置对过共晶铝硅熔体进行深过冷处理,采用光学显微镜、扫描电子显微镜和X射线衍射仪等手段,研究了硅含量和熔炼工艺对熔体深过冷过共晶铝硅合金凝固组织的影响。研究结果表明,合金在800 ℃熔炼,保温时间为30 min时,熔体深过冷处理可抑制Al-(14～18)Si合金熔体在凝固过程中初晶硅的析出。当Al-18Si合金在800 ℃熔炼,保温时间超过30 min时,深过冷Al-18Si合金熔体在室温金属模型中凝固时可完全抑制初晶硅的析出,获得无初晶硅的凝固组织。

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	周涵
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关键词: 过共晶铝硅合金熔体深过冷初晶硅凝固组织

Abstract: In this work, hypereutectic Al-Si melt was treated by melt quenching device. The effects of Si content and smelting process on the solidification microstructure of hypereutectic Al-Si alloys were investigated by means of optical microscope, scanning electron microscope and X-ray diffractometer. The results show that when hypereutectic Al-Si alloy was melted at 800 ℃ for 30 min, melt supercooling could inhibit the precipitation of primary Si during the solidification process of Al-(14—18)Si alloy. When Al-18Si alloy was melted at 800 ℃ for more than 30 min, the precipitation of primary Si could be completely inhibited if the melt supercooled Al-18Si alloy was solidified in room temperature metal mold and the solidification microstructure without primary Si could be obtained.

Key words: hypereutectic Al-Si alloy melt supercooling primary Si solidification microstructure

出版日期: 2023-06-25 发布日期: 2023-06-20

ZTFLH:

TG146.2+1

基金资助: 国家自然科学基金(52071032)

通讯作者: * 王建华,常州大学教授、博士研究生导师。1984年本科毕业于湖南大学机械工程系铸造专业,1989年硕士毕业于哈尔滨工业大学材料科学与工程学院,2003年博士毕业于中南大学。其中2005—2006年到瑞典皇家工学院材料科学与工程学院做高级访问学者。在国内外学术期刊上发表论文100余篇,申请国家发明专利40余项,其中授权30余项。主要研究方向包括:合金热力学、铝合金的复合变质处理、耐热铝合金强韧化研究、锌合金组织与力学性能研究。wangjh@cczu.edu.cn

作者简介: 周涵,2015年6月毕业于常州大学,获得工学学士学位。现为常州大学材料科学与工程学院硕士研究生,在王建华教授的指导下进行研究。目前主要研究领域为高性能有色金属材料。

引用本文:

周涵, 刘亚, 吴长军, 王建华, 苏旭平. 熔体深过冷过共晶铝硅合金的凝固组织研究[J]. 材料导报, 2023, 37(12): 21100123-6.
ZHOU Han, LIU Ya, WU Changjun, WANG Jianhua, SU Xuping. Study on Solidification Microstructure of Melt Supercooled Hypereutectic Al-Si Alloy. Materials Reports, 2023, 37(12): 21100123-6.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.21100123 或 http://www.mater-rep.com/CN/Y2023/V37/I12/21100123

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