检索结果-南通市图书馆

Microstructure,mechanical properties and corrosion resistance of as-cast and as-extruded Mg-4Zn-1La magnesium alloy

Rare Metals 2020年第8期39卷 909-917页

作者： Huseyin Zengin Yunus Turen Hayrettin Ahlatci yavuz sun Department of Metallurgy and Materials Engineering Karabuk University78050 KarabukTurkey Iron and Steel Institute Karabuk University78050 KarabukTurkey

Microstructure,mechanical properties and corrosion resistance of as-cast and as-extruded Mg-4 wt%Zn-1 wt%La magnesium alloys were *** alloys were produced by low-pressure die casting method and extruded at 350℃after homogenization at 400℃for 24 *** results show that the as-cast alloy mainly consists of primaryα-Mg matrix and Mg-Zn-La ternary second phases(also called T-Phase)along grain boundaries and isolated spherical particles inside the *** extrusion at350℃,the average grain size decreases by 81%due to dynamic recrystallization mechanism and T-phase particles are distributed along the extrusion *** elongation,yield strength and tensile strength of the as-cast Mg-4Zn-1La alloy increase by 179%,90%and 40%,respectively,as a result of the extrusion *** as-extruded Mg-4Zn-1La alloy shows better corrosion resistance than the as-cast alloy due to increased grain boundaries and decreased content of T-phase.

关键词： Magnesium alloys La modification Extrusion Microstructure Mechanical properties Corrosion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Production of 316L stainless steel implant materials by powder metallurgy and investigation of their wear properties

引用

Chinese Science Bulletin 2012年第15期57卷 1873-1878页

作者： KURGAN Naci sun yavuz CICEK Bunyamin AHLATCI Hayrettin Engineering Faculty Karabuk University

In this study,the mechanical and wear properties of AISI 316L stainless steel implant materials,produced by powder metallurgy(P/M),were *** 316L stainless steel powder was cold-pressed with 800 MPa of pressure and then sintered at 1200,1250 and 1300°C for 30 min as three sample *** microstructure,and mechanical and wear properties of the resulting steels were *** optical and scanning electron microscopiese were used to characterize the microstructure of the *** temperature mechanical properties of the steels were determined by hardness measurements and impact *** was determined using the pin-on-disc wear test,and the results were evaluated according to weight *** results indicate that the sintering temperature,time and atmosphere are important parameters that affect the porous ratio of materials produced by P/*** at high temperature can eliminate small pores and make the residual pores *** wear tests showed that the wear of the AISI 316L stainless steel implants changed depending on the sintering temperature and *** pores in the samples increase the wear ***,decreasing the porosity ratio of these materials improves all of their mechanical properties.

关键词： 316L不锈钢磨损性能粉末冶金法植入材料冶金生产植入物机械性能烧结温度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

添加锡对AS21镁合金显微组织和耐腐蚀性能的影响（英文）

引用

Transactions of Nonferrous Metals Society of China 2019年第7期29卷 1413-1423页

作者： Huseyin ZENGIN Yunus TUREN Hayrettin AHLATCI yavuz sun Abdullah Cahit KARAOGLANLI Department of Metallurgical and Materials Engineering Karabuk University Turkey Department of Metallurgical and Materials Engineering Bartιn University Turkey

研究添加锡对AS21 镁合金显微组织和耐腐蚀性能的影响。采用低压压铸法制备分别添加0、0.5、1 和2 wt.% Sn 的AS21 合金。用光学显微镜和扫描电镜进行显微组织表征,通过在3.5% NaCl 溶液中浸渍和电化学腐蚀试验研究合金的耐腐蚀性能。... 详细信息

研究添加锡对AS21 镁合金显微组织和耐腐蚀性能的影响。采用低压压铸法制备分别添加0、0.5、1 和2 wt.% Sn 的AS21 合金。用光学显微镜和扫描电镜进行显微组织表征,通过在3.5% NaCl 溶液中浸渍和电化学腐蚀试验研究合金的耐腐蚀性能。微观检测结果显示,AS21 合金中含有α-Mg、孤立的β-Mg17Al12 和汉字状Mg2Si 金属间化合物相。随着Sn 含量的增加,Mg2Si 相的分布变得更加离散和致密。当Sn 添加量为2 wt.%时,形成遍布于整个组织的富Sn 网状结构,汉字状组织由短棒状的Mg2Si 相排列组成。持续浸泡腐蚀试验表明,随着锡含量的增加,AS21 合金的降解程度不断降低,当锡含量为2 wt.%时,AS21 合金的腐蚀速率降低约65%。电化学腐蚀试验也表明,随着锡含量的增加,AS21 合金的耐蚀性逐渐提高。

关键词： AS21 镁合金锡添加显微组织腐蚀

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comparison of Solar Trackers and Application of a Sensor Less Dual Axis Solar Tracker

引用

Journal of Energy and Power Engineering 2015年第6期9卷 556-561页

作者： Ceyda Aksoy Tirmikci Cenk yavuz Electrical and Electronics Engineering Department Engineering Faculty Sakarya University Sakarya 54187 Turkey

In the 21th century, one of the biggest problems that the world faces is energy provision. Today, the way that most countries use for energy production is not clean and continuous. The most obvious proof for that is the change in the climate. The amount of CO2 (carbon dioxide) that is caused by fossil fuel burning increases day by day and this situation creates the greenhouse effect and change in the climate. The sun is one of the best solutions to this problem. It is not only clean and continuous, but also available anywhere, anytime. However, the efficiency of a photovoltaic system is directly related to the amount of solar energy acquired by the system which means that, it is necessary to follow the sun to have a high efficient system. There are two types of trackers that follow the sun and there are several ways to build them. In this paper, solar tracker designs are examined and a new dual axis solar tracker design is given.

关键词：太阳能跟踪器无传感器双轴应用光伏系统能源供应二氧化碳

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：