MICROSTRUCTURE AND MECHNICAL PROPERTY OF Al-BASED NANOCRYSTALLINE ALLOYS CONTAINING DISPERSIVE PARTICLES

Acta Metall Sin

1997, Vol. 33

Issue (10): 1053-1061 DOI:

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MICROSTRUCTURE AND MECHNICAL PROPERTY OF Al-BASED NANOCRYSTALLINE ALLOYS CONTAINING DISPERSIVE PARTICLES

WANG Jianqiang;HA0 Yunyan;HU Zhuangqi;WANG Zhongguang (Institute of Metal Research; Chinese academy of Sciences; Shenyang 110015); ZENG Meiguang (Northeastern University; Shenyang 110006)

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WANG Jianqiang;HA0 Yunyan;HU Zhuangqi;WANG Zhongguang (Institute of Metal Research; Chinese academy of Sciences; Shenyang 110015); ZENG Meiguang (Northeastern University; Shenyang 110006). MICROSTRUCTURE AND MECHNICAL PROPERTY OF Al-BASED NANOCRYSTALLINE ALLOYS CONTAINING DISPERSIVE PARTICLES. Acta Metall Sin, 1997, 33(10): 1053-1061.

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Abstract The microstructure, phase transformation and mechanical property in al-based nanocrystalline alloys containing dispersive particles were studied in detail. It is shown that the sizes of α-al grain and dispersive particles decrease and α-al13(Fe,V)3Si particles in al-Fe-V-Si microcrystalline alloys are substituted by al8Fe4Mm or al20Fe5Mm phase with the increase of Mm content. The transition of metastable al8Fe4Mm to stableα-al13(Fe,V)3Si phase takes place near 673 K. In addition, 1.0%Mm nanocrystalline alloy exhibits 2 times higher strengthes in tensile fracture and fatigue fracture than al-Fe-V-Si microcrystalline alloy, and has more better thermal stability.

Key words: dispersive particle nanocrystaline alloy microstructure phase transformation mechanical property

Received: 18 October 1997

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1997/V33/I10/1053

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