BULK Al90Mn9Ce1 ALLOY WITH ULTRA-HIGH STRENGTH PREPARED BY SPARK PLASMA SINTERING

Acta Metall Sin

2005, Vol. 41

Issue (12): 1298-1302 DOI:

Research Articles

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BULK Al90Mn9Ce1 ALLOY WITH ULTRA-HIGH STRENGTH PREPARED BY SPARK PLASMA SINTERING

ZHAO Zhankui; YAO Kefu; JIN Songzhe; LI Jingfeng

Department of Mechanical Engineering; Tsinghua University; Beijing 100084

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ZHAO Zhankui; YAO Kefu; JIN Songzhe; LI Jingfeng. BULK Al90Mn9Ce1 ALLOY WITH ULTRA-HIGH STRENGTH PREPARED BY SPARK PLASMA SINTERING. Acta Metall Sin, 2005, 41(12): 1298-1302 .

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Abstract Using spark plasma sintering technique, a bulk Al90Mn9Ce1 alloy, reinforced by quasicrystal particles, has been sintered under the pressure of 50 MPa at 400 ℃. The density and the compressive strength of the as-prepared bulk alloy are above 98% and 1000 MPa, respectively. It has been found that during the spark plasma sintering process, under the condition of large current, short sintering time and lower sintering temperature, the metastable icosahedron quasicrystal phase in primary powder particles is kept. And the strong discharge plasma among particles can decompose or break the oxide film on the primary powder's surface, resulting in the increment of their combination strength. So the as-prepared bulk alloy possesses high density and ultra-high strength.

Key words: Al90Mn9Ce1 alloy spark plasma sintering formability

Received: 01 July 2005

ZTFLH:

TG146.21

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	ZHAO Zhankui
	YAO Kefu
	JIN Songzhe
	LI Jingfeng

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2005/V41/I12/1298

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