Numerical simulation on fabrication of Cu-based bulk metallic glasses by horizontal continuous casting

被引：0

作者：

Jiang B.-Y. ^{[1
]}

Zhou B.-W. ^{[1
]}

Wang G. ^{[1
]}

Fang Y. ^{[1
]}

Zhang X.-G. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Dalian University of Technology, Dalian

来源：

Zhang, Xing-Guo (zxgwj@dlut.edu.cn) | 1600年 / Central South University of Technology卷 / 30期

基金：

中国国家自然科学基金;

关键词：

Composite mould; Cooling rate; Horizontal continuous casting; Numerical simulation; Solidification interface;

D O I：

10.11817/j.ysxb.1004.0609.2020-35912

中图分类号：

学科分类号：

摘要：

In this paper, the distributions of temperature fields and solidification interface in horizontal continuous casting of (Cu47Zr45Al8)98.5Y1.5 bulk metallic glasses (BMGs) slab were studied by ProCast. The results show that the mold filling time in the tundish is 22 s, and the holding time in the tundish should not exceed 55 s. The slab undergoes two cooling stages. In the first stage, the melt solidifies in the graphite passageway, the drawing speed is 1 mm/s and the cooling rate is less than 10 K/s. In the second stage, the heat of the slab is directly transferred to the copper, and the cooling rate is more than 50 K/s, which is sufficient for the critical cooling rate for CuZr based BMGs (20 K/s). The increase of drawing speed and superheat can promote the solidification interface to move along the casting direction, so that the melt can obtain a large cooling rate above 50 K/s near Tl. By improving the mold structure and shortening the embedding depth of the graphite, the time needed from Tl to Tg is reduced, which is conducive to obtaining amorphous microstructure. The experimental verification reveals that when the daring parameters are drawing speed of 2 mm/s, superheat of 80 K and embedded depth of 20mm, a BMGs slab with shiny metal luster can be obtained © 2020, Science Press. All right reserved.

引用

页码：2901 / 2911

页数：10

共 20 条

[1] INOUE A, TAKEUCHI A., Recent development and applications of bulk glass, International Journal of Applied Glass Science, 1, 3, pp. 273-295, (2011)
[2] CHEN H S, KRAUSE J T, COLEMAN E., Elastic constants, hardness and their implications to flow properties of metallic glasses, Journal of Non-Crystalline Solids, 18, pp. 157-171, (1975)
[3] INOUE A, ZHANG W, ZHANG T, KUROSAKA K., Cu-based bulk glassy alloys with high tensile strength of over 2000 MPa, Journal of Non-Crystalline Solids, 304, pp. 200-209, (2002)
[4] INOUE A, AKIHISA, TAKEUCHI AKIRA, Recent progress in bulk glassy, nanoquasicrystalline and nanocrystalline alloys, Materials Science & Engineering A, 375, 377, pp. 16-30, (2004)
[5] CHEN X H, ZHANG B Y, CHEN G L, ZHANG Y, HUI X D, LU Z P, LIU X J, XU Y, XING X R., Continuously manufacturing of bulk metallic glass-coated wire composite, Intermetallics, 18, pp. 2034-2038, (2010)
[6] PEKER A, JOHNSON W L., A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5, Applied Physics Letters, 63, pp. 2342-2344, (1993)
[7] JEONG H G, LEE J B., Crystallization behaviors of Zr-Ti-Cu-Ni-Be BMG sheet fabricated by squeeze-casting method and its micro-scaled forming, Journal of Alloys and Compounds, 536, pp. S86-S90, (2012)
[8] TAM M K, PANG S J, SHEK C H., Corrosion behavior and glass-forming ability of Cu-Zr-Al-Nb alloys, Journal of Non-Crystalline Solids, 353, pp. 3596-3599, (2007)
[9] INOUE A, TAKEUCHI A., Recent development and application products of bulk glassy alloys, Acta Materialia, 59, 6, pp. 2243-2267, (2011)
[10] ZUO Yu-bo, CUI Jian-zhong, ZHAO Zhi-hao, LI Nian-kui, WANG Yang, A new type of ultra-high strength aluminum alloy by low frequency electromagnetic horizontal continuous casting, Special-cast and Non-ferrous Alloys, 27, 9, pp. 706-708, (2007)

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