控轧控冷技术应用在Bi-2223/Ag超导带材制备过程中的研究  

THE STUDY OF THE APPLICATION OFCONTROLLED ROLLING AND CONTROLLED COOLING METHOD IN THE Bi-2223/Ag SUPERCONDUCTING TAPE MANUFACTURING PROCESS

作　　者：刘睿 易汉平[1] 宋秀华 刘莉 陈兴品[2] 刘庆[3] 韩征和[2] 

机构地区：[1]北京英纳超导技术有限公司 [2]清华大学应用超导研究中心 [3]清华大学材料科学与工程系

出　　处：《低温物理学报》2005年第A02期932-938,共7页Low Temperature Physical Letters

摘　　要：控轧控冷技术在钢铁中厚板材的应用已趋成熟,采用控轧控冷技术制备的中厚板材具有组织均匀、晶粒细小、机械性能高等优点.Bi-2223/Ag超导带材制备过程需经过多次反复的热处理和中间轧制过程,本文结合控轧控冷工艺特点,通过控制带材中间轧制制度和控制热处理冷却速度,研究了压下量和冷却条件对Bi-2223相变和其微观结构的影响,并借助SEM、XRD等方法对带材样品进行了观察,实验结果表明:合理的控轧控冷条件能够改善Bi-2223/Ag的微观结构并能够有效提高其电性能.这为控轧控冷技术在Bi-2223/Ag超导带材制备中的应用提供了初步理论依据,同时为形变热处理工艺提供了新的优化方向.The application of the controlled rolling and controlled coiling （CRCC） to the steel plank has already matured. Homogenous microstructure, fine grains and higher mechanical property were achieved on the steel plank through CRCC method. According to the character of CRCC method, the effect of rolling reduction and cooling conditions on the microstructure and Bi-2223 phase transition has been investigated, by means of SEM and XRD analysis. Experimental results show that suitable CRCC conditions can enhance the electrical property and improve the microstructure. Accordingly, the CRCC method provides a significant guidance for the optimization of thermomechanical procedure for Bi-2223/Ag superconducting tapes.

关 键 词：控轧控冷 中间变形 BI-2223/AG超导带材 Bi-2223超导相 

分 类 号：O511.3[一般工业技术—材料科学与工程]