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連續(xù)Cf/Al復(fù)合材料板雙輥鑄軋制備及力學(xué)性能研究
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太原科技大學(xué)應(yīng)用科學(xué)學(xué)院

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基金項(xiàng)目:

國(guó)家自然科學(xué)基金項(xiàng)目(51574171) 山西省自然科學(xué)基金項(xiàng)目(201901D11126); 山西省高等學(xué)??茖W(xué)研究?jī)?yōu)秀成果培育項(xiàng)目(2019KJ027); 山西省高等學(xué)??萍汲晒D(zhuǎn)化培育項(xiàng)目(2020CG046);


Preparation and mechanical properties of continuous Cf / Al composite plate by twin-roll casting
Author:
Affiliation:

1.School of applied sciences,Taiyuan University of Science and Technology,Taiyuan,030024;2.China

Fund Project:

The National Nature Science Foundation of China (51574171)

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    摘要:

    本文利用電鍍工藝制備了表面鍍鎳碳纖維,通過雙輥鑄軋短流程成型工藝成功制備了連續(xù)碳纖維增強(qiáng)鋁基(Cf/Al)復(fù)合材料板,研究了澆注溫度對(duì)鑄軋復(fù)合材料板的微觀組織、界面特征、斷口形貌和力學(xué)性能的影響。結(jié)果表明,澆注溫度為963~983K,軋制速度為2.7m/min,輥縫為2.0mm的條件下可制備出表面平整、無明顯表面缺陷的Cf/Al鑄軋復(fù)合材料板;其中,澆注溫度為973K時(shí),碳纖維與鋁基體之間界面結(jié)合良好;纖維表面金屬鎳層明顯改善了碳纖維與鋁基體之間的浸潤(rùn)性,鎳鍍層還有效抑制了Al4C3脆性相的產(chǎn)生,使Cf/Al復(fù)合材料板力學(xué)性能大幅提升,其中澆注溫度973K鑄軋的Cf/Al復(fù)合材料板抗拉強(qiáng)度比初始的38.2MPa提高了87.4%。

    Abstract:

    In this paper, Ni-coated carbon fiber was prepared by electroplating process, and continuous carbon fiber reinforced Al matrix (Cf/Al) composite plate was successfully prepared via twin-roll casting and short process forming process, and the effect of pouring temperature on the microstructure, interface characteristics, fracture morphology and mechanical properties of the Cf/Al composites was investigated. The results indicate that the Cf/Al composite plate with smooth and no obvious surface defects were fabricated under the conditions of pouring temperature of 963-983K, rolling speed of 2.7m/min and roll gap of 2.0mm; Among them, when the pouring temperature is 973K, the interface between the carbon fiber and the Al-matrix is ??well bonded; Ni-coated on the surface of fiber significantly improves the wettability between carbon fiber and aluminum matrix, and also effectively inhibits the formation of Al4C3 brittle phase, which greatly improves the mechanical properties of Cf/Al composite strip. The tensile strength of the Cf/Al composite plate at a pouring temperature of 973K increased by 87.4% compared with the initial 38.2MPa.

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林金保,鞏毅,牟維鵬,許鵬,劉二強(qiáng).連續(xù)Cf/Al復(fù)合材料板雙輥鑄軋制備及力學(xué)性能研究[J].稀有金屬材料與工程,2021,50(10):3745~3750.[Lin Jinbao, Gong Yi, Mu Weipeng, Xu Peng, Liu Erqiang. Preparation and mechanical properties of continuous Cf / Al composite plate by twin-roll casting[J]. Rare Metal Materials and Engineering,2021,50(10):3745~3750.]
DOI:10.12442/j. issn.1002-185X.20200828

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  • 收稿日期:2020-10-28
  • 最后修改日期:2020-12-29
  • 錄用日期:2021-02-03
  • 在線發(fā)布日期: 2021-10-28
  • 出版日期: 2021-10-25