| METALS AND METAL MATRIX COMPOSITES |
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| The Forming of Amorphous Alloy Parts: a Technological Review |
| DING Huaping1,GONG Pan1,2,,YAO Kefu3,DENG Lei1,JIN Junsong1,WANG Xinyun1
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1 State Key Laboratory of Material Processing and Die and Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China
2 State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China
3 School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China |
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Abstract As a new class of materials with excellent properties and different structure compared to traditional crystal metals, amorphous alloys have been attracting great interest from condensed matter physicists and materials scientists. In recent decades, the basic theoretical research and preparation technology of amorphous alloys have made great progress. Amorphous alloys, which posses wide application prospects as structural materials and functional materials, are gradually moving from laboratory to commercial applications and promoting the development of science and technology.
To realize the commercial application of a new material, it is necessary to have high productivity and low-cost manufacturing technology of parts. However, as the preparation of amorphous alloys requires rapid cooling rate, high vacuum, high purity raw materials, the cost is relatively high. Moreover, the high strength and high brittleness at room temperature make the amorphous alloys difficult to be machined, while crystallization is easy to occur during the thermoplastic forming process. In brief, it is still difficult to fabricate amorphous alloy parts with large size and complex shape, which seriously restricts the wide application of amorphous alloys. Thus, it has become an important subject for scholars to develop the novel part forming technologies according to the characteristics of amorphous alloy.
With the appearance of alloy system with strong amorphous forming ability, the forming technology of amorphous alloy parts has also been greatly developed. At present, the forming technology of amorphous alloys mainly includes casting forming, thermoplastic forming, welding, powder sintering, additive manufacturing technology, etc. The size limit of the formed part spans from nanometer to centimeter, and the complexity, preparation and forming efficiency are also greatly improved. However, each forming technology has some limitations in forming efficiency, size, performance and cost, which makes it difficult to fully realize the industrial production and application of amorphous alloy parts.
This paper reviews the latest research progress in the forming technologies of amorphous alloys, including casting, thermoplastic forming, welding, powder sintering and additive manufacturing. The advantages and disadvantages of existing forming technologies and the difficulties in amorphous alloys forming are also analyzed. Finally, it is pointed out that combining of different processing methods and introducing external ene-rgy fields may be important development directions for the fabrication of amorphous alloy parts in the future.
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Published: 03 January 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China（51601063,51725504),Hubei Provincial Natural Science Foundation of China(2018CFA003), the Funds of the State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body(31715005)，the Tribology Science Fund of State Key Laboratory of Tribology (SKLTKF17B03). |
| About author:: Ding Huaping graduated from Hefei University of technology in June 2018 with a Bachelor of engineering degree. He is now a doctoral student in the school of materials, Huazhong University of science and technology. The main research field is the thermoplastic forming of amorphous alloy; Gong pan, associate professor, master supervisor. He graduated from Huazhong University of science and technology in July 2006 with a bachelor's degree in engineering, and from Tsinghua University with a doctor's degree in engineering in July 2013. From 2014 to 2016, he conducted postdoctoral research at Yale University in the United States. He is mainly engaged in amorphous alloy, high entropy alloy and metal plastic forming technology, has published more than 40 SCI papers, and has been authorized 5 Chinese invention patents. In 2018, he was selected as "Chutian student" of Hubei Province; Yao Kefu, Professor, doctoral supervisor, mainly engaged in the research of advanced metal materials such as amorphous alloy, high entropy alloy, nanocrystalline and their processing and application. He has presided over and participated in the research work of the national key research and development plan project of the 13th five year plan ("chief of special soft magnetic alloy and application project)," 973 "project," 863 "project, general projects and key projects of the National Natural Science Foundation of China, international cooperation projects and cooperation projects with enterprises. He has published more than 300 academic papers, including more than 180 papers included in SCI and more than 20 authorized invention patents Wang Xinyun, Professor, doctoral supervisor, winner of National Science Foundation for Distinguished Young Scholars, deputy director of State Key Laboratory of material forming and die technology, and director of material processing department. In 2002, he obtained a doctor's degree in material processing engineering from Harbin University of technology, and after graduation, he was assigned to work in Huazhong University of science and technology. At present, he is the deputy director of precision forging Committee of China Plastic Engineering Society and the president of Hubei plastic engineering society. Has been engaged in material forming technology and automatic processing equipment, material forming process performance control and simulation calculation research. In the past five years, he has published more than 70 papers in important academic journals at home and abroad, including more than 40 papers included in SCI, 2 monographs and textbooks, 13 authorized patents (including 4 international ones), 1 software copyright, 4 mechanical industry standards, 1 national second prize for technological invention (ranking first), 1 first prize for science and technology in China's mechanical industry (ranking first). |
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2020, Vol. 34 
