EFFECTS OF EQUILIBRIUM PHASES ON MECHANICAL PROPERTIES OF 8090 Al-Li ALLOY

Acta Metall Sin

1996, Vol. 32

Issue (5): 484-488 DOI:

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EFFECTS OF EQUILIBRIUM PHASES ON MECHANICAL PROPERTIES OF 8090 Al-Li ALLOY

ZHANG Wanming; ZHANG Yun; HU Zhuangqi; LIU Yulin; ZHAO Hong＇en;(Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015)(Manuscript received 1995-09-15)

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ZHANG Wanming; ZHANG Yun; HU Zhuangqi; LIU Yulin; ZHAO Hong＇en;(Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015)(Manuscript received 1995-09-15). EFFECTS OF EQUILIBRIUM PHASES ON MECHANICAL PROPERTIES OF 8090 Al-Li ALLOY. Acta Metall Sin, 1996, 32(5): 484-488.

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Abstract Effects of contents of equilibrium phases T2 and δ in 8090 Al-Li alloy with composition (mass fraction, %) of Al-2.45Li-1.21Cu-1.20Mg-0.15Zr on its mechanical properties had been studied. The results show that, after double-aging treatments (210-300℃, 4h+retrogression+160℃, 100h), a large amount of precipitation of T2 may reduce the strength and improve the enlongation of the alloy to a certain extent, but a large amount of precipitation of δ may reduce the strength and improve the elongation of the alloy greatly.

Key words: Al-Li alloy heat treatment equilibrium phase mechanical property

Received: 18 May 1996

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1996/V32/I5/484

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