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Microstructure and Mechanical Properties of High-Nitrogen Austenitic Stainless Steels Subjected to Equal-Channel Angular Pressing

Fu-Yuan Dong , Peng Zhang , Jian-Chao Pang , Qi-Qiang Duan , Yi-Bin Ren , Ke Yang , Zhe-Feng Zhang

Three high-nitrogen stainless steels with different N contents were successfully processed by equal-channel angular pressing for one pass, and their microstructures and mechanical properties were investigated. It was found that the microstructure of the billet was heterogeneous across the billet thi...

关键词: High-nitrogen , stainless , (HNS) , steels , Equal-channel , angular , pressing , (ECAP) , N , content , Twinning , Strength , Ductility

Tearing Toughness of Ductile Metals

Cui-Hong Li , Qi-Qiang Duan , Zhe-Feng Zhang

金属学报(英文版) doi:10.1007/s40195-016-0371-8

A new parameter, i.e., tearing toughness, was employed to characterize the mechanical properties of some ductile metals (Cu, Cu-2 wt% Be, Cu-Al alloys, and some steels) by using three-leg trousers tearing tests. The experimental results demonstrate that their tearing toughness is not a physical cons...

关键词: Ductile , metals , Strength , Ductility , Tearing , toughness

原生QI成核中间相炭微球的结构

王成扬 , 姜卉 , 李鹏 , 郑嘉明

新型炭材料 doi:10.3969/j.issn.1007-8827.2000.04.003

以含有原生QI的煤沥青为原料,采用热缩聚方法制备出中间相炭微球.用扫描电子显微镜(SEM)观察了中间相炭微球的形貌和断面结构.经初步判断,在实验条件下原生QI成核煤沥青基中间相...

关键词: 原生喹啉不溶物 , 中间相炭微球 , 结构

煤沥青原料中QI含量对中间相有序生长的影响

黄爱华 , 金鸣林 , 李和兴 , 房永征

材料导报

试验是以2种含不同QI的煤沥青为原料,采用变径反应管进行热转化反应制备有序性中间相的研究.试验采用偏光显微镜和扫描电镜(SEM)观察了原料各反应阶段的微观结构,考察了QI对热转...

关键词: 煤沥青 , 热转化反应 , 喹啉不溶物 , 中间相

高软化点各向同性沥青和各向异性沥青中喹啉不溶物的结构研究

刘小红 , 王成扬 , 陈明鸣 , 于宝军

材料导报

以软化点相近的高软化点各向同性沥青和各向异性沥青为原料,经溶剂萃取分离出喹啉不溶物(QI),采用偏光显微镜、扫描电镜、元素组成分析、碘吸附测试和X射线衍射分析,对各向异性沥青的光学织构、QI...

关键词: 各向同性 , 各向异性 , 高软化点 , 喹啉不溶物

炭/炭复合材料用高性能浸渍剂沥青的研究

许斌 , 李铁虎

复合材料学报 doi:10.3321/j.issn:1000-3851.2003.02.013

根据原生QI杂质由微米级炭粒构成的特性,采用溶剂絮凝法对煤焦油进行了净化处理,以净化煤焦油为原料制备了低QI含量的高性能浸渍剂沥青,对比研究了高性能浸渍剂沥青的流变性能和渗透性...

关键词: 炭/炭复合材料 , 浸渍剂沥青 , 原生QI杂质 , 粘度 , 渗透性 , 性能

中温煤沥青喹啉不溶物的脱除及炭化制备针状焦

唐闲逸 , 魏晓慧 , 许德平 , 张海永 , 贺欣 , 熊楚安 , 唐瀚滢

材料研究学报 doi:10.11901/1005.3093.2015.685

以中温煤沥青为原料,研究其在弹管反应器中的炭化以及“反溶剂法”脱出喹啉不溶物(QI)后的精制沥青的炭化效果.结果表明:含有较高QI的非精制沥青不能制备出较好的针状焦,但在500...

关键词: 材料合成与加工工艺 , 中温煤沥青 , 反溶剂法 , 喹啉不溶物 , 炭化 , 针状焦

Sputtering Rates of Alloys in Glow Discharge

Jianshi REN and Gongshu ZHANG (Institute of Metal Research , Chinese Academy of Science , Shenyang , 110015 , China)Zhenshu WANG and Jinwei ZHAO (Shanghai University of Technology Shanghai , 200072 , China)

材料科学技术（英文）

The sputtering rates of alloys were investigated under constant Ar pressure and voltage supplied.The alloys studied in this work range from binary intermetallic alloys to ternary and quaternary alloys. It is revealed that the sputtering rates of alloy targets under steady states are where q is the s...

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