材料期刊网

Effect of Welding Processes and Consumables on Tensile and Impact Properties of High Strength Quenched and Tempered Steel Joints

G Magudeeswaran , V Balasubramanian , G Madhusudhan Reddy , T S Balasubramanian

钢铁研究学报(英文版)

Quenched and tempered steels are prone to hydrogen induced cracking in the heat affected zone after welding. The use of austenitic stainless steel consumables to weld the above steel was the only available remedy because of higher solubility for hydrogen in austenitic phase. In this investigation, a...

关键词: shielded metal arc welding process;flux cored arc welding process;austenitic

Influence of Rotational Speed on Microstructure and Mechanical Properties of Dissimilar Metal AISI 304-AISI 4140 Continuous Drive Friction Welds

G Subhash Chander , G Madhusudhan Reddy , A Venugopal Rao

钢铁研究学报(英文版)

Fundamental investigation of continuous drive friction welding of austenitic stainless steel (AISI 304) and low alloy steel (AISI 4140) is described. The emphasis is made on the influence of rotational speed on the microstructure and mechanical properties such as hardness, tensile strength, notch te...

关键词: friction welding , dissimilar metal joint , austenitic stainless steel , low alloy steel , microstructure , impact toughness , tensile strength

增强型Reddy层合梁理论与热应力分析

吴振 , 赵彧

复合材料学报

为推广Reddy理论准确分析复合材料层合/夹层结构的热变形和应力,通过使用横法向热变形和自由表面条件,发展了增强型Reddy层合梁理论。虽然考虑了横法向应变,增强型

关键词: 增强型Reddy理论 , 热膨胀 , 夹层梁 , 热应力 , 热应变

Investigations of the g factors of Fe+ in MgO and CaO

Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences

The g factors of Fe+ in MgO and CaO are theoretically investigated by the perturbation formula of the g factor of a V ion in cubic octahedral symmetry based on the cluster approach. By considering the partial quenching of the spin-orbit c...

关键词: electron paramagnetic resonance;crystal- and ligand-field theory;Fe+;MgO;CaO;atomic screening constants;electron spin resonance;paramagnetic-resonance;orbit interaction;scf functions;crystals;spectra;oxide;co2+

Investigations of the g factors for Co2+ in fluoroperovskites

Physica B-Condensed Matter

The perturbation formula of g factor for 3d(7) ion in cubic octahedral crystals has been obtained from a cluster approach. In the formula, the parameters related to the configuration interaction and the covalency reduction effect can be obtained from the optical spectr...

关键词: electron paramagnetic resonance;crystal- and ligand-field theory;Co2+;LiBaF3;KMgF3;KZnF3;CsCdF3;perovskite;transition;impurities;crystals

利用(G’/G)展开法求解广义变系数Burgers方程

庞晶 , 靳玲花 , 应孝梅

量子电子学报 doi:10.3969/j.issn.1007-5461.2011.06.005

近年来,变系数非线性发展方程受到越来越多的关注. 2008年王明亮等提出了一种新的方法,即(G’/G)展开法.将(G

关键词: 非线性发展方程 , 精确解 , (G’/G)展开法 , 广义变系数Burgers方程

应用改进的G/G'展开法求ZS方程的精确解

冯庆江 , 杨世玲

量子电子学报 doi:10.3969/j.issn.1007-5461.2013.06.007

应用改进的G/G'展开法构造出Zhiber-Shabat(ZS)方程的20组精确解,这些解的类型主要包含双曲函数通解、三角函数通解和有理函数通解三种形式.对解的性质进行了相应分...

关键词: 非线性方程 , 改进的G/G'展开法 , ZS方程 , 孤立波解 , 周期波解

应用改进的G'/G2展开法求Zakharov方程的精确解

冯庆江 , 肖绍菊

连铸 doi:10.3969/j.issn.1007-5461.2015.01.006

应用改进的G'/G2展开法构造出Zakharov方程的18组精确解,这些解主要包括双曲函数通解、三角函数通解和有理函数通解三种形式.当对双曲函数通解中的参数取特殊值时,可以得到...

关键词: 非线性方程 , 改进的G'/G2展开法 , Zakharov方程 , 孤立波解

Investigations of the EPR g factors for Er3+ in CaMoO4

Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences

The electron paramagnetic resonance (EPR) g factors g(parallel to) and g(perpendicular to) for Er3+ in CaMoO4 are theo retically investigated by using the perturbation formulas of the

关键词: electron paramagnetic resonance (EPR);crystal- and spin Hamiltonians;Er3+;CaMoO4;electron-paramagnetic-resonance;superposition-model;molybdate;crystals;calcium molybdate;ion;spectroscopy;parameters;tungstate;liyf4

A study of the temperature dependence of g factor for MgO:V2+ crystal

Physica B-Condensed Matter

The temperature dependence of EPR g factor for MgO:V2+ crystal has been studied theoretically by considering both the static contribution due to the thermal expansion of crystal and the vibrational contributions due to the electron-phonon interaction of the acoustic an...

关键词: impurities