Effect of Mn element on the microstructure and wear resistance of hypereutectic Al-22Si-2Fe-<i>x</i>Mn alloys produced by inclined cooling

WANG Qiu-ping; LI Lu; ZHOU Rong-feng; JIANG Ye-hua; ZHOU Rong

doi:10.13374/j.issn2095-9389.2017.02.009

Volume 39 Issue 2

Feb. 2017

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Engineering > 2017 > 39(2): 222-231

WANG Qiu-ping, LI Lu, ZHOU Rong-feng, JIANG Ye-hua, ZHOU Rong. Effect of Mn element on the microstructure and wear resistance of hypereutectic Al-22Si-2Fe-xMn alloys produced by inclined cooling[J]. Chinese Journal of Engineering, 2017, 39(2): 222-231. doi: 10.13374/j.issn2095-9389.2017.02.009

Citation:

WANG Qiu-ping, LI Lu, ZHOU Rong-feng, JIANG Ye-hua, ZHOU Rong. Effect of Mn element on the microstructure and wear resistance of hypereutectic Al-22Si-2Fe-xMn alloys produced by inclined cooling[J]. Chinese Journal of Engineering, 2017, 39(2): 222-231. doi: 10.13374/j.issn2095-9389.2017.02.009

Citation:

WANG Qiu-ping, LI Lu, ZHOU Rong-feng, JIANG Ye-hua, ZHOU Rong. Effect of Mn element on the microstructure and wear resistance of hypereutectic Al-22Si-2Fe-xMn alloys produced by inclined cooling[J]. Chinese Journal of Engineering, 2017, 39(2): 222-231. doi: 10.13374/j.issn2095-9389.2017.02.009

PDF( 18237 KB)

Effect of Mn element on the microstructure and wear resistance of hypereutectic Al-22Si-2Fe-xMn alloys produced by inclined cooling

doi: 10.13374/j.issn2095-9389.2017.02.009

WANG Qiu-ping^1,3,
LI Lu^1,2,3,
ZHOU Rong-feng^{1,2,3
,
,},
JIANG Ye-hua^1,3,
ZHOU Rong³

1) School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
2) Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
3) National & Local Joint Engineering Laboratory of Advanced Metal Solidification Forming and Equipment Technology, Kunming 650093, China

Received Date: 2016-04-18

Abstract

Abstract

Al-22Si-2Fe-xMn alloys were prepared by conventional casting and a segment-based inclined cooling plates. It is shown that inclined cooling preparation technology can improve the morphology and size of primary Si, but has limited effect on the needle-shaped Fe-rich phase. The effect of Mn addition on the crystal structure of Fe-rich phase under the condition of inclined cooling was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The hardness and wear resistance of hypereutectic Al-Si alloys with different Mn/Fe mass ratios were also researched by friction and wear test. Results indicate that long needle-shaped Fe-rich phase of tetragonal structure decreases gradually and disappears basically in alloys as the Mn/Fe mass ratio increases by inclined cooling casting hypereutectic Al-Si alloys. When the Mn/Fe mass ratio is 0.7, Fe-rich phase is mainly hexagonal structure block-shaped or fishbone-shaped α-Al₁₅(Fe, Mn)₃Si₂ phase. By the time, the wear resistance is enhanced compared with no Mn element addition. The wear mechanism gives priority to abrasive wear manner.
- aluminum silicon iron alloys,
- inclined cooling,
- hypereutectic alloys,
- microstructure,
- wear resistance

FullText(HTML)

References(12)

References

[5]	Choi Y S, Lee J S, Kim W T, et al. Solidification behavior of Al-Si-Fe alloys and phase transformation of metastable intermetallic compound by heat treatment. J Mater Sci, 1999, 34(9):2163
[6]	Kapranos P, Kirkwood D H, Atkinson H V, et al. Thixoforming of an automotive part in A390 hypereutectic Al-Si alloy. J Mater Process Technol, 2003, 135(2):271
[10]	Kim H Y, Park T Y, Han S W, et al. Effects of Mn on the crystal structure of α-Al (Mn, Fe) Si particles in A356 alloys. J Cryst Growth, 2006, 291(1):207
[12]	Lin C, Wu S S, Lü S L, et al. Effects of ultrasonic vibration and manganese on microstructure and mechanical properties of hypereutectic Al-Si alloy with 2% Fe. Intermetallics, 2013, 32:176
[13]	Cai Y H, Liang R G, Hou L G, et al. Effect of Cr and Mn on the microstructure of spray-formed Al-25Si-5Fe-3Cu alloy. Mater Sci Eng A, 2011, 528(12):4248
[14]	Li L, Zhou R F, Jiang Y H, et al. Effect of manganese on the formation of Fe-rich phases in electromagnetic stirred hypereutectic Al-22Si alloy with 2% Fe. Trans Indian Inst Met, 2014, 67(6):861
[16]	Zoltorevsky V S, Belov N A, Glazoff M V. Casting Aluminum Alloys. Amsterdam of Holland:Elsevier, 2007:42
[17]	Hou L G, Cai Y H, Cui H, et al. Microstructure evolution and phase transformation of traditional cast and spray-formed hypereutectic aluminium-silicon alloys induced by heat treatment. Int J Miner Metall Mater, 2010, 17(3):297
[18]	Birol Y. Cooling slope casting and thixoforming of hypereutectic A390 alloy. J Mater Process Technol, 2008, 207(1):200
[19]	Huang H J, Cai Y H, Cui H, et al. Influence of Mn addition on microstructure and phase formation of spray-deposited Al-25Si-xFe-yMn alloy. Mater Sci Eng A, 2009, 502(1):118
[20]	Zhong G, Wu S S, An P, et al. Microstructure and properties of high silicon aluminum alloy with 2% Fe prepared by rheo-casting. Trans Nonferrous Met Soc China, 2010, 20(9):1603
[21]	Gowri S, Samuel F H. Effect of alloying elements on the solidification characteristics and microstructure of Al-Si-Cu-Mg-Fe 380 alloy. Metall Mater Trans A, 1994, 25(2):437