CAJ | 학술논문

开发液态金属浸渗过程动态测量装置，以其深入研究液态金属在纤维预制体内部的渗流行为。利用该装置进行液态镁合金浸渗10%体积分数短碳纤维预制体的研究，测量浸渗过程中的临界浸渗压力，研究浸渗压力对浸渗速率的影响，观察不同浸渗压力下复合材料的微观形貌。结果表明：浸渗所需的临界压力为0.048 MPa，大于理论计算结果；随着浸渗压力的增大，液态金属的浸渗速率提高，但提高的幅度逐步降低；增大浸渗压力能够有效消除复合材料中的未浸渗缺陷；浸渗压力为0.6 MPa时获得组织致密的C f/Mg复合材料。
개발액태금속침삼과정동태측량장치，이기심입연구액태금속재섬유예제체내부적삼류행위。이용해장치진행액태미합금침삼10%체적분수단탄섬유예제체적연구，측량침삼과정중적림계침삼압력，연구침삼압력대침삼속솔적영향，관찰불동침삼압력하복합재료적미관형모。결과표명：침삼소수적림계압력위0.048 MPa，대우이론계산결과；수착침삼압력적증대，액태금속적침삼속솔제고，단제고적폭도축보강저；증대침삼압력능구유효소제복합재료중적미침삼결함；침삼압력위0.6 MPa시획득조직치밀적C f/Mg복합재료。
A dynamic measuring apparatus was developed to investigate the infiltration process of liquid metal into the fibrous preform. 10% (volume fraction) chopped carbon fiber preforms were infiltrated with magnesium alloy under different infiltration pressures. The threshold pressure and flow behavior of liquid metal infiltrating into the preforms were calculated and measured. The microstructure of obtained C f/Mg composites was observed. The results indicate that the measured threshold pressure for infiltration was 0.048 MPa, which was larger than the calculated value. The infiltration rate increased with the increase of infiltration pressure, but the increase amplitude decreased gradually. The tiny pores in the composites could be eliminated by increasing the infiltration pressure. When the infiltration pressure rose to 0.6 MPa, high quality C f/Mg composite was obtained.