材料期刊网

Control over Mechanical Properties and Microstructure of BR1500HS Hot-stamped Parts

Bai-liang ZHUANG , Zhong-de SHAN , Chao JIANG , Xin-ya LI

钢铁

关键词:

光谱和电化学方法研究黄芩素与核酸相互作用的机理

郭蒙 , 王淑敏 , 王佳丽 , 李丹 , 高庆宇 , 李丽敏

应用化学 doi:10.3724/SP.J.1095.2014.30232

在pH=3.22的NaAc-HAc溶液中,应用循环伏安法、方波伏安法、荧光光谱法、紫外可见光谱法和黏度法研究了黄芩素(BAI)与鲱鱼精子DNA(fsDNA)之间的相互作用,发现二者通过沟槽作用形成一电活性较高的复合物,fsDNA为BAI提供了一个低极性的疏水环境导致BAI的峰电流显著增强,增强的峰电流与fsDNA在7.0×10-8 ～7.0×10-6 g/mL浓度范围内呈正比,由此建立了一种测定核酸的新方法,检测限达到4.1×10-8 g/mL.

关键词: 黄芩素 , 核酸 , 电化学 , 沟槽作用

形状记忆合金的本构关系

王振清 , 周博 , 梁文彦

金属学报

利用DSC（示差扫描热量分析）热流-温度曲线和马氏体体积分数与自由能增量间的微分关系，建立了一个新的余弦型形状记忆合金马氏体相变模型。在Tanaka和Liang研究的基础上，推导了一个新的形状记忆合金本构方程。研究表明：Liang建立的马氏体相变模型和本构方程分别为本文建立的马氏体相变模型和本构方程所描述的一种特殊情况；本文建立的马氏体相变模型和本构方程比Liang及其它现存马氏体相变模型和本构方程能更准确地描述形状记忆合金的相变行为和力学行为。

关键词: DSC , Shape Memory Alloy , Martensitic transformation model , Constitutive equation

形状记忆合金的本构关系

王振清 , 周博 , 梁文彦

金属学报 doi:10.3321/j.issn:0412-1961.2007.11.017

利用DSC分析了热流-温度曲线和马氏体体积分数与自由能增量间的微分关系,建立了一个新的余弦型形状记忆合金马氏体相变模型;推导了一个新的形状记忆合金本构方程.研究表明:Liang和Rogers的马氏体相变模型和本构方程分别为本文建立的马氏体相变模型和本构方程所描述的一种特殊情况;本文建立的马氏体相变模型和本构方程比Liang和Rogers及其它现存马氏体相变模型和本构方程能更准确地描述形状记忆合金的相变行为和力学行为.

关键词: 形状记忆合金 , DSC , 马氏体相变模型 , 本构方程

Improved Nonlinear Equation Method for Numerical Prediction of Jominy EndQuench Curves

SONG Yuepeng , LIU Guoquan , LIU Shengxin , LIU Jiantao , FENG Chengming

钢铁研究学报(英文版)

Without considering the effects of alloying interaction on the Jominy endquench curves, the prediction results obtained by YU Baihai′s nonlinear equation method for multialloying steels were different from those experimental ones reported in literature. Some alloying elements have marked influence on Jominy endquench curves of steels. An improved mathematical model for simulating the Jominy endquench curves is proposed by introducing a parameter named alloying interactions equivalent (Le). With the improved model, the Jominy endquench curves of steels so obtained agree very well with the experimental ones.

关键词: Jominy endquench curve;nonlinear equation method;alloying interaction parameter;computer simulation

Correctness and completeness of the theory of bio-energy transport Reply to the comments on "The theory of bio-energy transport in the protein molecules and its properties"

Physics of Life Reviews

Commentaries by Philip W.T. Pong, Nongyue He, S.D. Liang, Tao Song, Yuri Gaididei and Sergey Volkov and Alexander Y. Grosberg on my review article (Pang, 2011 [1]) are answered. The validity of Davydov's mechanism of bio-energy transport, the completeness of theory, outstanding problems, the normalization and validity of wave function of the system in Pang' model as well as other related problems are elucidated in detail. (C) 2011 Elsevier B.V. All rights reserved.

关键词: biological temperature;3 channels;soliton;model

Reply to Comments on "Interdiffusion in the beta phase region of the Ni-Al-Cr system"

Scripta Materialia

A recent comment on a previously published paper addressed the invalid explanation of the off diagonal interdiflusion coefficients of the beta-Ni(Al,Cr) phase in the Ni-Cr-Al system according to the symmetric property of the thermodynamic matrix. In this paper, the experimental data presented by Hou et al. was reanalyzed and the interdiffusion coefficient matrix was estimated again. The results of the analysis have been discussed in terms of a brief reply to the comments of Liu and Liang. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

关键词: Diffusion;Intermetallic compound;Ni-Cr-Al

1998 COMPREHENSIVE TABLE OF CONTENTS

中国腐蚀与防护学报

N。1Atmospheric Corrosivlty for Steels………………………………………………… .LIANG Caideng HO[I i。-tat（6）Caustic Stress Corrosion Cr。king of Alloy 800 Part 2.The Effect of Thiosul执e……………………………………… KONG De-sheng YANG Wu ZHAO Guo-zheng HUANG De.ltL。ZHANG Yu。。he CHEN She。g-bac（13）SERS slid E16CttOCh6iniC81 Stlldy Of Illhibit1Oli M6ch＆tllsth Of ThlollY68 Oil ITOll ID H....

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MgO掺杂对BaSrTiO3介质陶瓷性能的影响

曲远方 , 张连松 , 李远亮

稀有金属材料与工程

通过实验,研究了MgO掺杂对BaSrTiO3陶瓷介电性能的影响和机理.观察了样品的微观形貌,讨论了氧化镁在调整Ba1-xSrxTiO3铁电陶瓷的介电-温度特性的作用.结果表明,氧化镁掺杂对Ba1-xSrxTiO3系介质陶瓷产生了压峰和移峰作用.借助扫描电镜对所制得的样品进行了分析,氧化镁掺杂使Bai.SrxTiO3系介质陶瓷的结构细晶化.以实验结果和微观结构分析为依据探讨了氧化镁掺杂改性作用的机理.

关键词: Ba1-xSrTiO3 , 介电特性 , MgO , 掺杂

NiTi形状记忆合金纤维拔出中的力学问题

李璟 , 金明 , 田东艳 , 兑关锁

复合材料学报 doi:10.3321/j.issn:1000-3851.2006.04.026

对NiTi形状记忆合金纤维拔出的力学模型进行了探讨.在恒温状态下,考虑纤维和基体间的界面摩擦力,分别用两种本构理论,即Tanaka的指数模型和C.Liang的余弦模型,讨论了形状记忆合金纤维在变轴力作用下的拉伸问题.推导了形状记忆合金纤维拔出量的表达式,并给出数值计算结果.由指数模型和余弦模型得到的结果非常吻合,证明了这种理论方法是正确的.

关键词: 形状记忆合金 , NiTi纤维 , 拔出 , 本构模型 , 变轴力