Effect of deep cryogenic treatment on martensitic lath refinement and nano-twins formation of low ca

来源 :钢铁研究学报(英文版) | 被引量 : 0次 | 上传用户:caohuyue
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The effect of heat treatment and deep cryogenic treatment on microstructural evolution of low carbon martensitic bearing steel was investigated.The experimental results showed that the lath martensite was obtained by quenching and a few twins as substructures formed in some martensitic laths.The rudiment of sub-interfaces of martensitic lath was formed in the high-density dislocation regions after deep cryogenic treatment;meanwhile,the number of twins increased,especially in the high-density dislocation regions.This phenomenon is due to the increase in intal stress caused by cryogenic treatment.After tempering,the rudiment of sub-interface further evolved into the martensitic lath boundary,and thus the original martensitic laths were refined.The twins formed by cryogenic treatment did not disappear after tempering.In addition,small quantities of annealing twins formed in tempering process.Martensitic laths morphology and substructures in different stages of the heat and deep cryogenic treatment were observed by transmission electron microscopy.
其他文献
四六级考试重要性不言而喻,但长期以来,人们只重视听力、阅读和作文部分,翻译部分几乎被忽视,对其应试技巧的研究不多。本文通过对大学英语四六级新题型真题的分析,结合授课
激励是指对人和行为具有激发加强和推动作用并指导或引导其行为,指向组织目标的一种精神促进过程。激励机制则是通过一套理性化的制度来反映激励主体与激励客体相互作用的方式
针对EPC总承包管理模式运行存在的主要问题进行分析,对如何改进EPC总承包管理模式进行探究,旨在通过改进总包项目管理,提高EPC工程项目的管理绩效.
近年来,工业遗产的调查和保护工作日益得到国内外的广泛关注,重庆的工业遗产数量丰富,见证了重庆这座城市的发展变迁,承载了几代重庆人的工业感情,但是由于城市的发展,许多工
我国的社会主义科学体系的建立是依据我国的历史进程、现阶段的经济状况、文化水平以及政治制度的完善程度等方面作为参考的,也就是立足于我国的基本国情而定的。本文也将从
期刊
期刊
岩土工程勘察作为工程建设的先导,在当前各类建设工程中发挥着非常重要的作用.由于岩土工程勘察质量直接关系到整个工程的安全,因此需要采取有效的勘察方法,并掌握岩土工程勘
人力资源是企业最为重要的经营资源。知识经济的兴起和经济全球化的到来,对现代企业人力资源的开发提出了更高的要求。怎么调动知识和技术载体对人的潜能,乃是企业的最关键问题
The microstructures and textures of the non-oriented electrical steel sheets under various annealing conditions were investigated.The orientation gradient in th