4C3的形成。結(jié)果表明:碳纖維與鋁鎂基體具有相對較好的浸潤性,并且沒有形成Al4C3脆性相。隨著澆注溫度的升高,復(fù)合材料的抗拉伸強度(UTS)先升高后降低。當(dāng)澆注溫度為963 K時,復(fù)合材料的抗拉伸強度達(dá)到了185 MPa,比基體材料(131 MPa)提高了41.2%。此外,對復(fù)合材料的拉伸斷面進行研究,進一步證實了碳纖維與鋁鎂基體之間良好的界面結(jié)合。雙輥鑄造法是制備碳纖維增強鋁鎂基復(fù)合材料的有效方法,且具有良好的研究前景。;The Al-10Mg composites containing 10wt% Mg reinforced by 6.8vol% continuous carbon fibers (CFs) were prepared by twin-roll casting method at different pouring temperatures (943, 963, 983, and 1003 K). The Ni coating on the CF surface was used to inhibit the formation of Al4C3 brittle phase. Results show that CFs and Al-10Mg matrix are well bonded without the formation of Al4C3 brittle phase. The ultimate tensile strength (UTS) of the composites is firstly increased and then decreased with increasing the pouring temperature. When the pouring temperature is 963 K, UTS of CFs/Al-10Mg composites reaches 185 MPa, which is increased by 41.2% compared with that (131 MPa) of the substrate. Meanwhile, the fracture surface of CFs/Al-10Mg composites was also investigated. The good interface bonding between CFs and Al matrix can be observed. Thus, the twin-roll casting is an effective method to prepare CFs/Al-10Mg composites with a promising prospect."/>
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