Analysis of microstructure and microhardness of aluminum alloy melt for grain refinement by twin-roll casting

被引：0

作者：

Kumar, Naveen ^{[1
]}

Mall, P. K. ^{[2
]}

Prasad, C. Durga ^{[3
]}

Medhavi, Amit ^{[4
]}

Mehrotra, Monica ^{[5
]}

Kumar, Shailendra ^{[6
]}

Alam, Md Sarfaraz ^{[7
]}

Singh, Gurbhej ^{[8
]}

Singh, Suresh ^{[9
]}

Balu, Ranjith ^{[10
]}

Aden, Adem Abdirkadir ^{[11
]}

机构：

[1] United Coll Engn & Res, Dept Mech Engn, Prayagraj 211010, Uttar Pradesh, India

[2] BBD NIIT 056, Dept Mech Engn, Lucknow 227105, Uttar Pradesh, India

[3] RV Inst Technol & Management, Dept Mech Engn, Bengaluru 560076, Karnataka, India

[4] Kamla Nehru Inst Technol, Dept Mech Engn, Sultanpur 228118, Uttar Pradesh, India

[5] BBDEC 508, Dept Elect & Commun Engn, Lucknow 227105, Uttar Pradesh, India

[6] BN Coll Engn & Technol, Dept Mech Engn, Lucknow 226201, Uttar Pradesh, India

[7] Sershah Engn Coll Sasaram, Dept Mech Engn, Sasaram 821113, Bihar, India

[8] Chitkara Univ, Ctr Res Impact & Outreach, Rajpura 140401, Punjab, India

[9] Chitkara Univ, Chitkara Ctr Res & Dev, Chandigarh 174103, Himachal Prades, India

[10] Saveetha Inst Med & Tech Sci, Saveetha Sch Engn, Dept Phys, Chennai 602105, Tamil Nadu, India

[11] Bulehora Univ, Dept Mech Engn, Bule Hora, Ethiopia

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ENGINEERING | 2025年 / 20卷 / 01期

关键词：

TRC; MCTRC; Grain refinement; Casting; Microhardness; Microstructure; HOMOGENIZATION;

D O I：

10.1186/s40712-025-00211-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study examines sheets produced using twin-roll casting (TRC) and melt conditioned twin-roll casting (MCTRC) to evaluate the effect of melt conditioning on segregation pattern and grain refinement. To produce sheets through the MTCRC technique, melt conditioning using high shear technology (high-speed rotor) was applied to Al-5 Mg alloys, before subjecting the melt to TRC. A low shear slope was used to prepare a commercially pure aluminum ingot. The mean grain size obtained for slope processed samples with vibration at a pouring temperature of 780 degrees C is 69.4 mu m, decreasing to 62.5 mu m with a 20 degrees C decrease in pouring temperature. Samples prepared without vibration at temperatures of 780 degrees C and 760 degrees C exhibit grain sizes of 85.172 and 77.8 mu m, respectively. Additionally, the average grain size of Al-5 Mg alloy sheets produced using TRC is around 270 mu m, which decreases to 230 mu m for sheets produced using MCTRC. The grain size data comparison of the samples prepared using high shear technology and those with a low shear slope indicate successful results of grain refinement in both cases. However, it is advantageous to produce sheets using the low shear slope method as compared to the high shear technology, because of the low setup costs.

引用

页数：15

共 33 条

[1] Barekar N.S., Dhindaw B.K., Twin-roll casting of aluminum alloys - An overview, Mater Manuf Process, 29, 6, pp. 651-661, (2014)
[2] Bian Z., Bayandorian I., Zhang H.W., Scamans G., Fan Z., Extremely fine and uniform microstructure of magnesium AZ91D alloy sheets produced by melt conditioned twin roll casting, Mater Sci Technol, 25, 5, pp. 599-606, (2009)
[3] Birol Y., The performance of Al-Ti-C grain refiners in twin-roll casting of aluminium foilstock, J Alloys Compd, 430, 1-2, pp. 179-187, (2007)
[4] Chen Z.W., Li S.S., Zhao J., Homogenization of twin-roll cast A8006 alloy, Trans Nonferrous Met Soc China, 22, 6, pp. 1280-1285, (2012)
[5] Dhindaw B.K., Aditya G.S.L., Mandal A., Recycling and downstream processing of aluminium alloys for automotive applications, (2020)
[6] Dundar K., Altuncu E., Birbasar O., Deep drawability of Al-Mg alloys produced by twin roll continuous casting method: investigation of microstructure and mechanical properties, Metals, 14, 2, (2024)
[7] Direct strip casting of metals and alloys, 1st Editio, (2006)
[8] Forbord B., Andersson B., Ingvaldsen F., Austevik O., Horst J.A., Skauvik I., The formation of surface segregates during twin roll casting of aluminium alloys, Mater Sci Eng A, 415, 1-2, pp. 12-20, (2006)
[9] Gras C., Meredith M., Hunt J.D., Microdefects formation during the twin-roll casting of Al-Mg-Mn aluminium alloys, J Mater Process Technol, 167, 1, pp. 62-72, (2005)
[10] Haga T., Development of a twin roll caster for light metals Manufacturing and processing, Manuf Process, 43, 1, pp. 393-402, (2010)

← 1 2 3 4 →