FRACTURE BEHAVIOUR OF SPRAY DEPOSITED Al-3.8Li-0.8Mg-0.4Cu-0.13Zr ALLOY

Acta Metall Sin

1996, Vol. 32

Issue (2): 163-168 DOI:

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FRACTURE BEHAVIOUR OF SPRAY DEPOSITED Al-3.8Li-0.8Mg-0.4Cu-0.13Zr ALLOY

CUI Chengsong; FAN Hongbo; SHEN Jun; JIANG Zuling; LI Qingchun(Harbin Institute of Technology; Harbin 150001)(Manuscript received 1995-08-07)

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CUI Chengsong; FAN Hongbo; SHEN Jun; JIANG Zuling; LI Qingchun(Harbin Institute of Technology; Harbin 150001)(Manuscript received 1995-08-07). FRACTURE BEHAVIOUR OF SPRAY DEPOSITED Al-3.8Li-0.8Mg-0.4Cu-0.13Zr ALLOY. Acta Metall Sin, 1996, 32(2): 163-168.

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Abstract The tensile properties and fracture behaviour of AI-3.8Li-0.8Mg-0.4Cu-0.13Zr alloy, prepared by spray deposition have been investigated. The alloy aged at 190℃ for 10 h has the best properties(UTS=534 MPa, 0.2 YS=480 MPa and El.=10 %). Fractrue surface of the as-quenched alloy is totally dimple-transgranular type, while the failure mode of the aged alloy is a mixed type with the intergranular and transgranular fracture. The intergranular fracture is due to the formation of PFZs and equilibrium phases along grain boundary.(Correspondent: CUI Chengsong, Campus Post Box 434, Harbin institute of Technology, Harbin 150001)

Key words: spray deposition rapid solidification Al-Li alloy fracture

Received: 18 February 1996

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1996/V32/I2/163

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