Defect formation and mechanism of ZA alloy made in continuous casting by heated mold

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	Defect formation and mechanism of ZA alloy made in continuous casting by heated mold
	Ma, Y; Hao, Y; Yan, FY; Liu, HJ
	2003
会议名称	METALLURGICAL AND MATERIALS PROCESSING: PRINCIPLES AND TECHNOLOGIES, VOL 1
会议录名称	METALLURGICAL AND MATERIALS PROCESSING: PRINCIPLES AND TECHNOLOGIES, VOL 1
页码	1287-1299
出版地	184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
出版者	MINERALS, METALS & MATERIALS SOC
摘要	The continuous directional solidification technique of five kinds of special ZA alloys with eutectic, peritectic and eutectoid transformation under the condition of continuous casting by heated mold was studied. The mechanism of surface defects appearing in ZA alloy line was discussed and the structure of some defects were analyzed by SEM. The results show that only when the fitting of various technique factors, pressure head, outlet temperature, pulling speed and cooling condition are reasonable under a certain range, can the ZA alloy smooth line be continuously pulled out. Unreasonable techniques will result in hot tear, rough surface, mush outlet, leaking and other defects. The shape and location of solid-liquid zone have an important influence on the formation of the above defects. When the solid-liquid zone is located in the mould outlet or inner mould, the surface of solidification will protrude into the inner mould. If the remaining liquid cannot counteract the solidification contraction, a rough surface will appear. If the solidification surface further into the mould, the ingot in the mould will have a great friction force when pulling and will form. a hot tear. When the solid-liquid zone is moved out of mould, the solidification surface will turn into a plane, which easily results in leaking. A vibration or unstable operation will cause an ingot. winding during pulling.
收录类别	CPCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Composites
WOS记录号	WOS:000182493000108
引用统计	无
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/38369
专题	国际教育学院
通讯作者	Ma, Y
作者单位	Gansu Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Ma, Y,Hao, Y,Yan, FY,et al. Defect formation and mechanism of ZA alloy made in continuous casting by heated mold[C]. 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA:MINERALS, METALS & MATERIALS SOC,2003:1287-1299.