材料期刊网

Hf和Zr在高温材料中作用机理研究

郑运荣 , 蔡玉林 , 阮中慈 , 马书伟

航空材料学报 doi:10.3969/j.issn.1005-5053.2006.03.006

在高温合金中,元素Hf和Zr可以促进γ+γ′共晶、MC(2)碳化物、M2SC碳硫化物和Ni5M相的形成,改变草书状MC和M3B2成为块状并且通过净化晶界或枝晶间自由态的S来提高这些薄弱部位的结合强度,从而延迟裂纹的形成和扩展.Hf和Zr可提高铸造高温合金室温拉伸和中温持久的强度和塑性.Hf,Zr抑制...

关键词: 高温合金 , 相变 , 铪 , 锆 , 凝固 , 初熔 , TLP连接 , Ni3Al/Ni7Hf2共晶 , 显微组织 , MC(2)碳化物 , Ni5Hf相 , 力学性能

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AZ91D EXTRUDED TUBE

B.Y. Yu* , C.L. Bao , H.W. Song , Z. Liu

金属学报(英文版)

The effect of extrusion ratio on microstructures and mechanical properties of magnesium alloy AZ91D extruded tube at 430℃ has been studied. After the evolution of microstructure and mechanical properties of AZ91D during extrusion were studied, the following parameters were obtained: tensile strength...

关键词: magnesium , 挤压 , 管材 , 组织 , 力学性能

Microstructure and Mechanical Properties of Magnesium Alloy AZ31B Brazed Joint Using a Zn-Mg-Al Filler Metal

Li Ma Dingyong He Xiaoyan Li Jianmin Jiang

材料科学技术（英文）

In order to join the similar magnesium alloy, a novel Zn-Mg-Al filler metal was designed and applied to braze AZ31B plates by using high-frequency induction brazing technique. The microstructure, phase constitution and fracture morphology of the brazed joint were investigated. The experimental resul...

关键词: Filler metal , 钎焊 , 显微组织 , 力学性能

Microstructure and Mechanical Properties of Magnesium Alloy AZ31B Brazed Joint Using a Zn-Mg-Al Filler Metal

Li Ma Dingyong He Xiaoyan Li Jianmin Jiang

材料科学技术（英文）

In order to join the similar magnesium alloy, a novel Zn-Mg-Al filler metal was designed and applied to braze AZ31B plates by using high-frequency induction brazing technique. The microstructure, phase constitution and fracture morphology of the brazed joint were investigated. The experimental resul...

关键词: Filler metal , 钎焊 , 显微组织 , 力学性能

Effect of Cold Deformation on Phase Evolution and Mechanical Properties in an Austenitic Stainless Steel for Structural and Safety Applications

钢铁研究学报(英文版)

关键词: 奥氏体不锈钢 , 力学性能 , 冷变形 , 安全应用 , 相演化 , X-射线衍射分析 , 马氏体相 , 结构

Effect of Thermal Refining on Mechanical Properties of Annealed SAE 4130 by Multilayer GTAW

钢铁研究学报(英文版)

关键词: 退火处理 , GTAW , 力学性能 , SAE , 热炼 , 焊接过程 , 热影响区 , 结构观测

Influence of Alloying Elements Corrosion Resistance of Cold on Mechanical Properties and Rolled C-Mn-Si TRIP Steels

钢铁研究学报(英文版)

关键词: TRIP钢 , 耐腐蚀性能 , 合金元素 , 力学性能 , 热轧 , 相变诱发塑性 , 微观结构 , 四氧化三铁

Microstructures and Mechanical Properties of Helical Bevel Gears Made by Mn-Cu Alloyed Austempered Ductile Iron

钢铁研究学报(英文版)

关键词: 螺旋锥齿轮 , 锰铜合金 , 力学性能 , 等温淬火球墨铸铁 , 微观结构 , 20CrMnTi钢 , ADI公司 , 扫描电子显微镜

高强高韧铝锌镁钪合金板材制备及其组织性能演变

尹志民 , 邓英 , 赵凯 , 段佳琦 , 唐蓓 , 何振波 , 彭勇宜 , 姜锋 , 潘清林

中国有色金属学报

采用力学性能测试和电子显微分析技术研究了不同加工处理条件下Al-5.4Zn-2.0-Mg-0.25Cu-0.1Sc-0.1Zr合金的显微组织及性能演变.结果表明:在半连续激冷铸造条件下,铸锭存在晶界偏析,形成了富Zn、Mg的非平衡相和富Fe、Si、Mn的杂质相；经470℃、12 h均匀化处理后,富Z...

关键词: Al-Zn-Mg-Sc-Zr合金 , 板材 , 铸锭均匀化 , 热塑性 , 固溶-时效 , 组织 , 力学性能 , 演变

Chemical Compositions, Microstructure and Mechanical Properties of Roll Core used Ductile Iron in Centrifugal Casting Composite Rolls

材料科学技术（英文）

关键词: 球墨铸铁 , 力学性能 , 显微组织 , 化学成分 , 复合轧辊 , 离心铸造 , 卷芯 , 厚大断面球铁