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材料研究学报  2008, Vol. 22 Issue (5): 467-472    
  论文 本期目录 | 过刊浏览 |
初始凝固组织对Cr17表面皱折的影响机制
刘海涛;杜伟;谢胜涛;刘振宇;王国栋
东北大学 轧制技术及连轧自动化国家重点实验室
LIU Hai-Tao;;;;WANG Guodong
东北大学 轧制技术及连轧自动化国家重点实验室
引用本文:

刘海涛; 杜伟; 谢胜涛; 刘振宇; 王国栋 . 初始凝固组织对Cr17表面皱折的影响机制[J]. 材料研究学报, 2008, 22(5): 467-472.
, , , , . [J]. Chin J Mater Res, 2008, 22(5): 467-472.

全文: PDF(892 KB)  
摘要: 本文的目的是研究Cr17铁素体不锈钢的初始凝固组织对与皱折特性相关的晶粒簇的演变的影响以及揭示初始凝固组织对冷轧退火板皱折的影响机制。利用电子衍射背散射(EBSD)技术对Cr17铁素体不锈钢不同初始凝固组织的铸坯的轧制、退火试样的五种晶粒簇进行了研究。结果表明,晶粒簇的演变对初始凝固组织的依赖性很大。等轴晶铸坯的冷轧退火试样比柱状晶铸坯的冷轧退火试样具有更少的{001}<110>晶粒簇和更多的{111}<112>晶粒簇,且两种晶粒簇的分布更紧密。两种铸坯冷轧退火试样的皱折特性的差异归因于两者的{001}<110>、{111}<112>晶粒簇数量和分布的不同,而与{001}<010>、{111}<110>、{112}<110>晶粒簇无关。
关键词 金属材料铁素体不锈钢表面质量皱折EBSD    
Abstract:The aim of this paper is to study the effects of different initial solidification structures in Cr17 ferritic stainless steel on the evolution of grain colonies associated with ridging and to reveal the ridging difference of cold-rolled and annealed sheets. Five kinds of grain colonies of the rolled and annealing samples were investigated by using electron back-scattered diffraction (EBSD) analyses. The experimental results showed that the evolution of grain colonies depends on the initial solidification structure. The cold-rolled and annealed sample of equiaxed solidification structure has less {001}<110> grain colony but more {111}<112> grain colony in comparison with columnar solidification structure. Moreover, these two kinds of grain colonies of cold-rolled and annealed sample with initial equiaxed solidification structure show close distribution. The ridging difference of cold-rolled and annealed with different initial solidification structures is attributed to the differences of amount and distribution of {001}<110> grain colony and {111}<112> grain colony, but not related with {001}<010>, {111}<110>, {112}<110> grain colonies.
Key wordsmetallic materials    ferritic stainless steel    surface quality    ridging    EBSD
收稿日期: 2007-10-16     
ZTFLH:  TG113  
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