The Fatal Defects in Cast Al-Si Alloys Due to Sn Addition

被引：1

作者：

Xiao, Yao ^{[1
]}

Wang, Jicheng ^{[2
]}

Deng, Qianyu ^{[2
]}

Feng, Li ^{[2
]}

Peng, Dianming ^{[2
]}

Feng, Hui ^{[3
]}

Li, Kai ^{[1
,4
]}

Du, Yong ^{[1
,4
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Runxingtai Elect Appliance Co Ltd, Zhuhai 519000, Peoples R China

[3] Nanjing Chenguang Grp Co Ltd, Res Inst Aerosp Mfg Technol, Nanjing 210006, Peoples R China

[4] Cent South Univ, Hunan Ctr Electron Microscopy, Changsha 410083, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 17期

关键词：

Al-Si alloys; cast defect; Sn; Sn oxides; FIB; HADDF-STEM; MECHANICAL-PROPERTIES; ALUMINUM; MICROSTRUCTURE;

D O I：

10.3390/ma16176020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cast defects are common in cast alloys and they are difficult to eliminate without deformation. They strongly degrade the mechanical properties of cast alloys. The addition of some elements can affect the number of cast defects. In this work, the deleterious effect of Sn addition on the mechanical properties of Al-Si alloys has been investigated via 3D-computed tomography, SEM and TEM. Amorphous Sn oxides were found near the alumina film or formed enclosures with alumina film. The melt containing high Sn content was trapped by enclosures, causing more shrinkage pores during solidification. Cracks likely initiated and expanded along these pores and brittle amorphous Sn oxides, deteriorating the mechanical properties. This work suggests not adding Sn to various Al alloys when used in a cast state.

引用

页数：11

共 42 条

[1] Effect of additives on the microstructure and tensile properties of Al-Si alloys [J].

Abdelaziz, Mohamed Hassan ;

Samuel, Agnes M. ;

Doty, Herbert W. ;

Valtierra, Salvador ;

Samuel, Fawzy H. .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2019, 8 (02) :2255-2268

[2] Effect of Trace Addition of Sn on the Precipitation Hardening in Al-Si-Cu Eutectic Alloy [J].

Akopyan, Torgom K. ;

Belov, Nikolay A. ;

Letyagin, Nikolay V. .

JOM, 2019, 71 (05) :1768-1775

[3] Effect of trace additions of Sn on microstructure and mechanical properties of Al-Cu-Mg alloys [J].

Banerjee, Sanjib ;

Robi, P. S. ;

Srinivasan, A. ;

Lakavath, Praveen Kumar .

MATERIALS & DESIGN, 2010, 31 (08) :4007-4015

[4] Effect of Mn and cooling rates on α-, β- and δ-Al-Fe-Si intermetallic phase formation in a secondary Al-Si alloy [J].

Becker, H. ;

Bergh, T. ;

Vullum, P. E. ;

Leineweber, A. ;

Li, Y. .

MATERIALIA, 2019, 5

[5] Feasibility of manufacturing of Al2O3-Mo HTCC by hybrid additive process [J].

Bernard, Megane ;

Pateloup, Vincent ;

Passerieux, Damien ;

Cros, Dominique ;

Madrangeas, Valerie ;

Chartier, Thierry .

CERAMICS INTERNATIONAL, 2022, 48 (11) :14993-15005

[6] APPLICATION OF THE MOSSBAUER-EFFECT TO THE CHARACTERIZATION OF AN AMORPHOUS TIN-OXIDE SYSTEM [J].

COLLINS, GS ;

KACHNOWSKI, T ;

BENCZERKOLLER, N ;

PASTERNAK, M .

PHYSICAL REVIEW B, 1979, 19 (03) :1369-1373

[7] SOLIDIFICATION AND SUSCEPTIBILITY TO HYDROGEN ABSORPTION OF AL-SI ALLOYS CONTAINING STRONTIUM [J].

DENTON, JR ;

SPITTLE, JA .

MATERIALS SCIENCE AND TECHNOLOGY, 1985, 1 (04) :305-311

[8] On the interaction of solute atoms with vacancies in diluted Al-alloys: A paradigmatic experimental and ab-initio study on indium and tin [J].

Elsayed, Mohamed ;

Staab, Torsten E. M. ;

Cizek, Jakub ;

Krause-Rehberg, Reinhard .

ACTA MATERIALIA, 2021, 219

[9] Oxide bifilms in aluminium alloy castings - a review [J].

Gopalan, R. ;

Prabhu, Narayan K. .

MATERIALS SCIENCE AND TECHNOLOGY, 2011, 27 (12) :1757-1769

[10] THE DEFORMATION AND AGEING OF MILD STEEL .3. DISCUSSION OF RESULTS [J].

HALL, EO .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1951, 64 (381) :747-753

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