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High Temperature Deformation of Al_2O_3/Cu Composites

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Journal of Materials Science & Technology 2001年第3期17卷 325-328页

作者： Jianjun WU. Yun ZHANG, Yanfei JIANG and Meiyun XUE Department of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China tingquan lei School of Materials Science and Engineering, Harbin Institute of Technology, Uarbin 15000 Dept. of Mat. Sci. and Eng. Hebei Univ. of Technol. Tianjin 300130 China

This work concerns with the high temperature deformation of internally oxidized Al2O3/Cu composites. The investigation revealed that dispersive alumina can obstruct dislocation sliding and define the subgrain size thereby improve significantly the strength of the materials at high temperature. The sliding of dislocations is a main deformation mechanism in the given temperature range. The sliding of grain boundary and diffusive creep play important roles at high temperature and low strain rate. The dispersoids can raise the recrystallization temperature to higher than 1223 K. Dynamic recovery is a main softening way under the experimental conditions. Higher deformation rate and lower deformation temperature imply a higher flow stress.

关键词： High Temperature Deformation of Al2O3/Cu Composites Cu Al

INFLUENCE OF COMPOSITION AND DISPERSOID ON FATIGUE FRACTURE BEHAVIOUR OF Al-Mg-Si ALLOYS

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Acta Metallurgica Sinica(English Letters) 1991年第2期4卷 151-154页

作者： JIANG Daming HONG Bande lei tingquan (T.C.lei) Harbin Institute of Technology,Harbin,China Lecturer,Analysis and Measurement Center,Harbin Institute of Technology,Harbin 150006

A study was made of the fatigue fracture behaviour under different aging conditions of two Al-Mg-Si alloys with different chemical compositions and dispersoid *** dispersoid phase can alter the mode of the deformation uniformity of *** dispersoid it- self may decohere from the dispersoid/matrix interface under cyclic stress to form small dimples.

关键词： AI-Mg-Si alloy dispersoid fatigue fracture

Reaction thermodynamics and kinetics on in situ Al_2O_3/Cu composites

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中国有色金属学会会刊：英文版 1999年第3期9卷 617-622页

作者： Li Guobin(李国彬) 1, Wu Jianjun(武建军) 1, Guo Quanmei(郭全梅) 2, Jiang Yanfei(姜延飞) 1, Shen Yutian(申玉田) 1, lei tingquan(雷廷权) 2 1. Department of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P.R.Chi Hebei Univ of Technology Tianjin China

The preferred internal oxidation of aluminum in Cu Al alloy was used to obtain in situ Al 2O 3/Cu composites. The reinforcement particles were mainly γ Al 2O 3, some θ Al 2O 3 and a little α Al 2O 3. Thermodynamics analyses show that the chemical reactions are 3Cu 2O+2Al=6Cu+Al 2O 3 or 3CuO+2Al=3Cu+Al 2O 3. A related equilibrium diagram was drawn. The experiments and investigation show that the formation rate of Al 2O 3 was controlled by the diffusion of oxygen in matrix.

关键词： Al 2O 3/Cu composites internal oxidation thermodynamics kineticsDocument code: A

FRACTURE MECHANISM OF PRE-DEFORMATION-AGED Al-2.73Li ALLOY

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Acta Metallurgica Sinica(English Letters) 1990年第5期3卷 357-363页

作者： SUN Dongli YANG Dezhuang lei tingquan CUI Yuexian Harbin Institute of Technology,Harbin,China Lecturer,Department of Metallic Materials and Technology,Harbin Institute of Technology,Harbin 150006,China

The fracture mechanism of deformation-aged Al-Li alloy was approached by investigating the influence of prior cold deformation on the precipitation kinetics as well as the behaviours of work hardening and fracture for Al-2.73Li *** experimental results show that the work hardening rate and the strength are increased and the ductility is decreased by prior cold *** decrease in ductility is mainly due to the cell dislocaton substructure distrib- uted inhomogeneously and the hardening of precipitate free zones at grain boundaries caused by prior cold *** failure mode in the alloy is a mixed integranular and transgranular *** tendency of intergranular fracture is intensified through the *** mechanisms of intergranular failure in the alloy are different under various deformation-aging treatments.

关键词： Al-Li alloy deformation-aging precipitation strengthening fracture

TEM OBSERVATION OF NUCLEATION AND GROWTH OF BORIDE DURING BORONIZATION OF STEEL 20 AND INFLUENCE OF PRIOR DEFORMATION

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Acta Metallurgica Sinica(English Letters) 1990年第5期3卷 342-346页

作者： JIANG Bailing lei tingquan LIU Wei CUI Yuexian Harbin Institute of Technology,Harbin,China Dept.of Metallic Materials and Technology,Harbin Institute of Technology,Harbin 150006,China

The TEM observation on the single-side thinned specimens was made of the nucleation and growth of boride during boronization for steel 20 and the influence of prior room temperature *** results of X-ray diffraction and electron probe microstructure analysis show that only Fe_2B formed in the surface layer of specimens at the beginning of boronization;the atomic concentration of B in the surface layer increased with the increase of deformation monotonously;and the segregation of B atoms in the dislocation cells hindered the recovery and recrystallization of the deformed structure of the matrix and accelerated the nucleation and growth of boride in the surface layer.

关键词： boronization boride dislocation nucleation growth deformation

有机聚合物先驱体法制备SiBONC复合陶瓷

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稀有金属材料与工程 2005年第Z1期34卷 385-388页

作者：李峰温广武宋亮雷廷权周玉哈尔滨工业大学材料学院黑龙江哈尔滨150001 哈尔滨工业大学材料学院黑龙江哈尔滨150001 哈尔滨工业大学材料学院黑龙江哈尔滨150001 哈尔滨工业大学材料学院黑龙江哈尔滨150001 哈尔滨工业大学材料学院黑龙江哈尔滨150001

通过有机聚合物先驱体法使用氯代硅氧烷[(SiOCl2)n]、烷基胺(RNH2)、三氯化硼(BCl3)为原料,对SiO2基陶瓷进行了B,C,N的原子级掺杂,制备了一种硅基复合陶瓷.通过有机-无机裂解转化制备了陶瓷的纳米粉体,其Si:B的摩尔比为80:20,将该粉体... 详细信息

通过有机聚合物先驱体法使用氯代硅氧烷[(SiOCl2)n]、烷基胺(RNH2)、三氯化硼(BCl3)为原料,对SiO2基陶瓷进行了B,C,N的原子级掺杂,制备了一种硅基复合陶瓷.通过有机-无机裂解转化制备了陶瓷的纳米粉体,其Si:B的摩尔比为80:20,将该粉体热压制备了复合陶瓷材料.通过力学分析,XRD,SEM,FT-IR,TEM等测试手段对材料的结构和性能进行了分析研究.陶瓷材料的密度在1.95 g/cm3～2.15 g/cm3之间,力学性能在1700℃,25 Mpa热压条件下达到最高,其抗弯强度为150.50 Mpa、维氏硬度为3.78GPa、断裂韧性为2.10 Mpa·m1/2.得到的复合陶瓷在1700℃时仍保持非晶态,在1800℃时有少量的纳米级SiC球形颗粒析出.分析认为:B,C,N的原子级掺杂引入显著提高了SiO2基陶瓷材料的力学性能和析晶温度,十分有效的提高了陶瓷材料的热稳定性.

关键词：先驱体有机硅聚合物非晶态复合陶瓷有机-无机转化

低合金Cr-Mo-V钢中VC沉淀相的精细结构

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金属学报 2000年第10期36卷 1009-1014页

作者：孙树文茅建富雷廷权贺连龙哈尔滨工业大学材料科学与工程学院哈尔滨150001 中国科学院金属研究所固体原子像开放实验室沈阳110015

采用透射电子显微分析（ＴＥＭ）和高分辨透射电子显微分析（ＨＲＥＭ）技术研究了低合金Ｃｒ－Ｍｏ－Ｖ钢不同回火温度下ＶＣ沉淀相质点的精细结构及其与基体的界面关系．结果表明：较低温度回火时，ＶＣ沉淀相系以｛１００｝ａ为惯... 详细信息

采用透射电子显微分析（ＴＥＭ）和高分辨透射电子显微分析（ＨＲＥＭ）技术研究了低合金Ｃｒ－Ｍｏ－Ｖ钢不同回火温度下ＶＣ沉淀相质点的精细结构及其与基体的界面关系．结果表明：较低温度回火时，ＶＣ沉淀相系以｛１００｝ａ为惯习面的纳米尺度的薄片，与基体存在Ｂａｋｅｒ－Ｎｕｔｔｉｎｇ关系随着回火温度升高，片状相聚集成碳化物团或者发生球化，与基体丧失共格或部分共格。

关键词：低合金Cr-Mo-V钢 VC沉淀相精细结构显微分析

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微弧氧化技术的研究进展

硅酸盐学报 2005年第9期33卷 1133-1138页

作者：王德云东青陈传忠雷廷权山东大学材料科学与工程学院济南250061 哈尔滨工业大学材料科学与工程学院哈尔滨150001

微弧氧化技术是一种针对Al,Mg,Ti等阀金属及其合金进行表面陶瓷化的新技术。利用该技术制成的氧化膜结构致密,结合好,具有优良的综合力学性能,特别适用于处在高速运动、并且对耐磨耐蚀性要求较高的零部件的表面处理,近年来该领域的研究... 详细信息

微弧氧化技术是一种针对Al,Mg,Ti等阀金属及其合金进行表面陶瓷化的新技术。利用该技术制成的氧化膜结构致密,结合好,具有优良的综合力学性能,特别适用于处在高速运动、并且对耐磨耐蚀性要求较高的零部件的表面处理,近年来该领域的研究一直较为活跃。文中综述了国内外微弧氧化技术的研究现状,概括了微弧氧化的基本原理、过程、制备方法和工艺特点,总结了微弧氧化膜的组织结构和性能特点,介绍了该技术在几种常见金属中的研究进展,并展望了该技术的应用前景。

关键词：微弧氧化陶瓷膜组织性能研究进展

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台阶淬火双相20钢的拉伸行为及断裂特征

钢铁 1983年第7期18卷 46-53页

作者：雷廷权沈显璞潘杰哈尔滨工业大学

本文观察了经台阶淬火(完全奥氏体化后预冷至α+γ双相区然后淬火)所得较粗品粒(d_F=18μm)双相钢的拉伸行为及断裂特征。结果表明,双相钢中铁素体与马氏体的组织性能和单相的有明显差异。经200℃回火后强、塑性配合较好。马氏体含量较... 详细信息

本文观察了经台阶淬火(完全奥氏体化后预冷至α+γ双相区然后淬火)所得较粗品粒(d_F=18μm)双相钢的拉伸行为及断裂特征。结果表明,双相钢中铁素体与马氏体的组织性能和单相的有明显差异。经200℃回火后强、塑性配合较好。马氏体含量较低时,颈缩造成相界处的应力集中,使铁素体以解理方式起裂,裂纹力图绕过马氏体而扩展。少量马氏体以微孔汇集方式被拉断。马氏体含量超过50％时,裂纹发生在沿晶界分布的铁素体内的夹杂处,并大多沿相界在铁素体中扩展。

关键词：单相马氏体钢中组织性能铁素体相双相拉伸行为断裂特征