Hot Forging of Nitrogen Alloyed Duplex Stainless Steels

来源 :Journal of Materials Science & Technology | 被引量 : 0次 | 上传用户:Viola2007
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
Duplex stainless steels are gaining global importance because of the need for a high strength corrosion resistant material. Three compositions of this group were selected with three different nitrogen contents viz, 0.15 wt pct (alloy 1), 0.23 wt pct (alloy 2) and 0.32 wt pct (alloy 3). The steels were melted in a high frequency induction furnace and hot forged to various reductions from 16% to 62%. In this work, the effect of hot forging on the ferrite content, hardness, yield strength, impact strength and grain orientation (texture) were studied. Fracture analysis on all the forged specimens using SEM reveals that a size reduction of 48% results in maximum ductility and impact strength as well as minimal ferrite content and grain size. Thus the mechanical properties are found to have a direct correlation to ferrite content and grain size. The highest impact strength was observed in specimens with the smallest grain size, which was observed in specimens forged to 48% reduction in size. Duplex stainless steels are gaining the global importance because of the need for a high strength corrosion resistant material. Three compositions of this group were selected with three different nitrogen contents viz, 0.15 wt pct (alloy 1), 0.23 wt pct (alloy 2) and 0.32 wt pct (alloy 3). The steels were melted in a high frequency induction furnace and hot forged to various reductions from 16% to 62%. In this work, the effect of hot forging on the ferrite content, hardness, yield strength, impact strength and grain orientation (texture) were studied. Fracture analysis on all the forged specimens using SEM reveals that a size reduction of 48% results in maximum ductility and impact strength as well as minimal ferrite content and grain size. to have a direct correlation to ferrite content and grain size. The highest impact strength was observed in specimens with the smallest grain size, which was observed in specimens forged to 48% reduction in size.
其他文献
期刊
目的掌握2004—2012年北京出入境口岸食品和饲料中沙门菌的血清型分布。方法对65株分离自2004—2012年北京出入境口岸食品及饲料中的沙门菌以及13株中国医学细菌菌种保藏管理
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
目的 应用多排螺旋CT(multidetector computed tomography,MDCT)对无腹膜覆盖的结肠癌进行术前分期,分析不同分期患者的预后情况.方法 回顾性分析2009年1月至2014年12月间在
随着计算机和无线通信技术的飞速发展,4G通信技术融多种无线网路技术于一体,给人们的生产生活提供了更方便更快捷的服务,应用范围不断增加,受到广大用户的认可,但随之而来的
期刊
Dual phase (DP) steels containing four different amounts of martensite ranging from 43 vol. pct to 81 vol. pct have been developed from 0.2 wt pct carbon steel
针对当前按医疗项目付费方式的特点,通过分析大型综合性医院医疗服务收费的情况,揭示医院内部物价管理存在的问题,并提出大型综合性医院提高物价管理质量的具体方法和保障措
目的 探讨影响脂肪变性供肝在成人肝移植术后早期预后不良的相关危险因素.方法 回顾性分析2008年1月1日至2012年6月30日的脂肪肝供肝成人肝移植125例,根据术后早期预后分为预
我是北京崇文卫校92届病案管理专业毕业生。记得在校学习的四年间,老师们曾无数次为我们讲述一个科学管理的范例—北京协和医院的病案管理。她是病案管理专业的前景与希望。