MECHANICAL ANALYSIS AND NUMERICAL CALCULATION OF BONDING STRENGTH MEASUREMENT BY INTERFACIAL INDENTATION METHOD

ＭＥＣＨＡＮＩＣＡＬＡＮＡＬＹＳＩＳＡＮＤＮＵＭＥＲＩＣＡＬＣＡＬＣＵＬＡＴＩＯＮＯＦＢＯＮＤＩＮＧＳＴＲＥＮＧＴＨＭＥＡＳＵＲＥＭＥＮＴＢＹＩＮＴＥＲＦＡＣＩＡＬＩＮＤＥＮＴＡＴＩＯＮＭＥＴＨＯＤ①ＹｉＭａｏｚｈｏｎｇ１,ＨｕａｎｇＢａｉｙｕｎ１,...     

THE ESTABLISHMENT OF CALCULATION FORMULA FOR CASTING－ROLLING FORCE OF VISCOUS FLUID AND THE INFLUENCE OF TECHNOLOGICAL FACTORS

ＴＨＥＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＣＡＬＣＵＬＡＴＩＯＮＦＯＲＭＵＬＡＦＯＲＣＡＳＴＩＮＧ－ＲＯＬＬＩＮＧＦＯＲＣＥＯＦＶＩＳＣＯＵＳＦＬＵＩＤＡＮＤＴＨＥＩＮＦＬＵＥＮＣＥＯＦＴＥＣＨＮＯＬＯＧＩＣＡＬＦＡＣＴＯＲＳ￥Ｓｕｎ，Ｂｉｎｙｕ；Ｚｈａｎ...     

THERMAL DECOMPOSITION BEHAVIOUR OF NATURAL BASTNASITE CRYSTAL IN CALCINATION

ＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＢＥＨＡＶＩＯＵＲＯＦＮＡＴＵＲＡＬＢＡＳＴＮＡＳＩＴＥＣＲＹＳＴＡＬＩＮＣＡＬＣＩＮＡＴＩＯＮ￥Ｘｉａｎｇ，Ｊｕｎ；Ｚｈａｎｇ，Ｃｈｅｎｇｘｉａｎｇ；Ｔｕ，Ｇａｎｆｅｎｇ；Ｒｅｎ，Ｃｈｅｎｇｚｈｉ（Ｄｅｐａｒ...     

GRAIN BOUNDARY SEGREGATION AND INTERGRANULAR BRITTLENESS IN HIGH STRENGTH ALUMINIUM ALLOY

ＧＲＡＩＮＢＯＵＮＤＡＲＹＳＥＧＲＥＧＡＴＩＯＮＡＮＤＩＮＴＥＲＧＲＡＮＵＬＡＲＢＲＩＴＴＬＥＮＥＳＳＩＮＨＩＧＨＳＴＲＥＮＧＴＨＡＬＵＭＩＮＩＵＭＡＬＬＯＹ￥Ｓｏｎｇ，Ｒｅｎｇｕｏ；Ｚｈｅｎｇ，Ｍｅｉｇｕａｎｇ（ＤｅｐａｒｒｍｅｎｔｏｆＭａｔｅｒｉ...     

A THEORETICAL INVESTIGATION OF BUBBLE ELECTROPHORESIS

ＡＴＨＥＯＲＥＴＩＣＡＬＩＮＶＥＳＴＩＧＡＴＩＯＮＯＦＢＵＢＢＬＥＥＬＥＣＴＲＯＰＨＯＲＥＳＩＳ￥ＸｕＪｉｒｕｎ；ＫｅｌｓａｌｌＧＨ（Ｐ．Ｏ．Ｂｏｘ１３９，ＮｏｒｔｈｅａｓｔｅｒｎＵｎｉｖｅｒｓｉｔｙ，Ｓｈｅｎｙａｎｇ１１０００６ＩｍｐｅｒｉａｌＣｏ...     

DESIGN AND PREPARATION OF SILICON NITRIDE COMPOSITE WITH HIGH FRACTURE TOUGHNESS AND NACRE STRUCTURE

ＤＥＳＩＧＮＡＮＤＰＲＥＰＡＲＡＴＩＯＮＯＦＳＩＬＩＣＯＮＮＩＴＲＩＤＥＣＯＭＰＯＳＩＴＥＷＩＴＨＨＩＧＨＦＲＡＣＴＵＲＥＴＯＵＧＨＮＥＳＳＡＮＤＮＡＣＲＥＳＴＲＵＣＴＵＲＥＹＨｕａｎｇ；Ｈ．ＮＨａｏ；Ｙ．Ｌ．ＣｈｅｎａｎｄＢ．Ｌ．Ｚｈｏｕ（１）Ｄｅ...     

第九届全国无缝钢管生产技术信息交流会将于1994年10月在安徽合肥召开

第九届全国无缝钢管生产技术信息交流会将于１９９４年１０月在安徽合肥召开ＴＨＥ９ＴＨＮＡＴＩＯＮＡＬＩＮＦＯＲＭＡＴＩＯＮＳＥＭＩＮＡＲＯＮＳＥＡＭＬＥＳＳＳＴＥＥＬＴＵＢＥＰＲＯＤＵＣＴＩＯＮＴＥＣＨＮＯＬＯＧＹＴＯＢＥＨＥＬＤＩＮＯｃｔ．，１９９４...     

INFLUENCES OF SULPHUREOUS IMPURITY AND MICROSHRINKAGE ON HAC BEHAVIOR OF SUPER－STRENGTH STEEL

ＩＮＦＬＵＥＮＣＥＳＯＦＳＵＬＰＨＵＲＥＯＵＳＩＭＰＵＲＩＴＹＡＮＤＭＩＣＲＯＳＨＲＩＮＫＡＧＥＯＮＨＡＣＢＥＨＡＶＩＯＲＯＦＳＵＰＥＲ－ＳＴＲＥＮＧＴＨＳＴＥＥＬＳ．Ｋ．Ｈｅ;Ｇ．Ｓ．ＷａｎｇａｎｄＳ．Ｎ．Ｗａｎｇ（Ｂｅｉｊｉｎｇｉｎｓｔｉｔｕｔｅ...     

BASIC EQUATIONS FOR THERMO－ELECTROCHEMISTRYAND THE ENTROPY CHANGE OF THE STANDARDHYDROGEN ELECTRODE REACTION

ＢＡＳＩＣＥＱＵＡＴＩＯＮＳＦＯＲＴＨＥＲＭＯ－ＥＬＥＣＴＲＯＣＨＥＭＩＳＴＲＹＡＮＤＴＨＥＥＮＴＲＯＰＹＣＨＡＮＧＥＯＦＴＨＥＳＴＡＮＤＡＲＤＨＹＤＲＯＧＥＮＥＬＥＣＴＲＯＤＥＲＥＡＣＴＩＯＮＦＡＮＧＺｈｅｎｇ,ＺＨＡＮＧＨｅｎｇｚｈｏｎｇ,ＺＨＡ...     

THE RELATIONSHIPS BETWEEN GLOBAL AND EVERY LAYER DEFORMATION TEXTURES OF 70－30 BRASS ROLLED BY CROSS SHEAR ROLLING

ＴＨＥＲＥＬＡＴＩＯＮＳＨＩＰＳＢＥＴＷＥＥＮＧＬＯＢＡＬＡＮＤＥＶＥＲＹＬＡＹＥＲＤＥＦＯＲＭＡＴＩＯＮＴＥＸＴＵＲＥＳＯＦ７０－３０ＢＲＡＳＳＲＯＬＬＥＤＢＹＣＲＯＳＳＳＨＥＡＲＲＯＬＬＩＮＧ￥Ｚｈａｏ，Ｘｉａｎｇ；Ｚｕｏ，Ｌｉａｎｇ；Ｚｈａｏ，...     

钛合金的激光表面处理研究进展

介绍了钛合金的各种激光表面改性技术及其研究进展,讨论了激光表面改性处理工艺参数对钛合金性能的影响。并介绍了其应用前景。利用激光表面处理可克服钛合金硬度低、易发生粘着磨损等缺点,同时可提高其耐蚀性及抗高温氧化等性能。此外,利用脉冲激光沉积技术在改善钛合金的生物活性等方面也取得了好的结果。     

Al-Sr中间合金制备及应用的发展现状

综述了近些年来Al-Sr中间合金的发展现状，包括制备工艺，应用现状及用Al-Sr中间合金变质处理Al-Sr合金存在的问题。介绍了Al-Sr中间合金组织形态对Al-Si合金变质效果的影响，以及改变中间合金组织形态的有关工艺；近年来锶与其他元素复合变质的研究进展；其他锶合金及锶在变质其他合金方面的应用。     

La-Mg-Ni系贮氢合金的研究进展

La—Mg—Ni系贮氢合金是最具希望的新一代Ni—MH电池的负极材料,本文阐述了该合金系研究的主要进展,分析了LaMg—Ni系电极合金性能的主要影响因素,就提高La—Mg—Ni系电极合金电化学循环稳定性的问题提出了看法。     

Effect of Co element on microstructure and mechanical properties of FeCoXNiCuAl alloys

FeCox NiCuAl (x values in molar ratio, x=0.2, 0.5, 1, 1.5, 2 and 3) alloys were prepared using a suck-casting method. The effect of Co element on phase constituents, microstructure and mechanical properties of the FeCox NiCuAl alloys was investigated using X-ray diffraction, scanning electron microscopy, optical microscopy and compressive tests. It was found that the Co addition has a significant influence on the structure and properties of the FeCox NiCuAl alloys. The alloys have typical dendrite microstructure, and are composed of a simple fcc structure and bcc structure. The addition of Co promotes the formation of fcc phase in the alloys, retards the compressive strength and hardness of the alloys, and enhances the plasticity of the alloys.     

铝铁合金的研究进展与应用状况

综述了Al-Fe合金的国内外研究现状，阐述了共晶、过共晶铝铁合金及其在快速凝固条件下的凝固特点，概述了添加Ca、Mg、Mn、RE等微量元素及采用热速处理、电流处理、交变磁场、超声振动等工艺条件对Al-Fe合金微观组织的影响规律，叙述了目前Al-Fe合金的应用状况，并对铝铁合金的研究及应用前景进行了展望。     

牙科合金研究述略

叙述贵金属牙科合金的主成分及物理冶金基础，合金中添加元素的影响，低贵金属或非贵金属牙科合金的开发状况。     

Ni-Cr-Fe系高温合金的渗氮工艺研究

对Inconel 718、GH4145、R26三种不同成分的高温合金进行了渗氮处理,采用金相法和硬度梯度法研究了不同化学成分和不同工艺对气体渗氮层深度的影响.结果表明,随着合金中镍含量的增加,渗氮层深度减小,减少幅度达到50%～100%.     

Electrochemical Performance Estimation of Anodized AZ31B Magnesium Alloy as Function of Change in the Current Density

The anodized AZ31B magnesium alloys were synthesized via electrodeposition processes. The aim of this work was to determine the electrochemical behavior of magnesium alloys by using anodized alloys as a protective coating. The anodized alloys were characterized by x-ray diffraction, exhibiting the crystallography orientation for Mg and MgO phases. The x-ray photoelectron spectroscopy was used to determine the chemical composition of anodized magnesium alloys. By using electrochemical impedance spectroscopy and Tafel curves, it was possible to estimate the electrochemical behavior of anodized AZ31B magnesium alloys in Hank’s balanced salt solution (HBSS). Scanning electron microscopy was performed to analyze chemical changes and morphological surface changes on anodized Mg alloys due to the reaction in HBSS/anodized magnesium surface interface. Electrochemical behavior in HBSS indicates that the coatings may be a promising material for biomedical industry.     

Al对低中子吸收截面Ti-Zr-Nb高熵合金的微观结构和腐蚀行为的影响

针对Al对低中子吸收截面Ti-Zr-Nb系高熵合金的微观结构和腐蚀行为进行了研究。比较了不含Al和含15at%Al的Ti-Zr-Nb合金的相图、微观结构、氧化行为和腐蚀行为。相图计算结果表明,在熔点下Ti-Zr-Nb三元合金为bcc相,添加的Al会倾向于在合金中形成不同的金属间化合物,而缩小相图中bcc单相区的温度区。XRD和TEM结果表明,熔炼获得的Ti-Zr-Nb三元合金为简单的bcc结构,而Al会导致晶体结构转变为有序的B2结构。通过热重分析和高压釜试验对Ti-Zr-Nb系高熵合金的腐蚀行为进行了研究。结果表明,在腐蚀过程中,Ti-Zr-Nb三元合金的氧化膜容易发生剥落,而添加Al会提高氧化层的稳定性,但不会改变腐蚀氧化层的主要氧化物种类。通过计算反应速率常数和激活能对氧化动力学进行了研究,发现添加Al的Ti-Zr-Nb系合金的高温氧化性能与Zr合金接近。     

镁合金的热处理

介绍了镁合金的热处理类型,综述了不同镁合金系合金化和热处理时的显微组织特点,以及合金元素对时效析出过程及合金性能的影响。最后提出了镁合金热处理未来的研究和发展方向。