CAJ | 학술논문

采用直接水冷半连续铸造法制备4045/3004/4045铝合金三层复合锭坯.考察复合界面附近的温度场分布,并研究复合界面的宏观形貌、微观组织及界面两侧的成分分布.结果表明,在冷却板的作用下,界面附近形成一层具有一定厚度的半固态层,从而保证半连续铸造过程制备复合锭坯的顺利实现.两种合金在界面处较好地冶金结合在一起.界面力学性能测试结果表明,复合界面的抗拉强度和剪切强度分别为105和88 MPa,这进一步证明了复合界面的结合是一种冶金结合.
채용직접수랭반련속주조법제비4045/3004/4045려합금삼층복합정배.고찰복합계면부근적온도장분포,병연구복합계면적굉관형모、미관조직급계면량측적성분분포.결과표명,재냉각판적작용하,계면부근형성일층구유일정후도적반고태층,종이보증반련속주조과정제비복합정배적순리실현.량충합금재계면처교호지야금결합재일기.계면역학성능측시결과표명,복합계면적항랍강도화전절강도분별위105화88 MPa,저진일보증명료복합계면적결합시일충야금결합.
Three-layer composite ingot of 4045/3004/4045 aluminum alloys was prepared by direct-chill semi-continuous casting process,the temperature field distribution near the composite interface,macro-morphology,microstructure and composition distribution of the composite interface were investigated.The results show that semi-solid layer with a certain thickness forms near the interface due to the effect of cooling plate,which ensures successful implementation of casting the composite ingot.Two different aluminum alloys are well bonded metallurgically.The mechanical properties of composite interface were measured,the tensile and shearing strengths of composite interface are 105 and 88 MPa,respectively,which proves that the composite interface is a kind of metallurgical bonding.