欢迎登录材料期刊网

材料期刊网

高级检索

  • 论文(13)
  • 图书()
  • 专利()
  • 新闻()

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....

关键词:

Numerical Simulation and Shrinkage Defects Prediction of a Turbine Blade Investment Casting

Jing TIAN , Xiang XUE , Yuebing ZHANG , Yalong GAO , Luzhi LIU , Qin SUN , Shiyou YUAN

材料科学技术(英)

By adopting the solid modeling software SoldEdge and the enmeshment software SRIFCast as the pre-processing platform, a Ni based alloy turbine blade was three-dimensionally modeled and automatically enmeshed. A software code for numerical simulation of fluid flow and heat transfer was developed. The Xue criterion and Niyama criterion were used to predict the position of the shrinkage defects occurring in the solidification processes of the turbine blade. The results showed that both Xue and Niyama criteria could precisely predict the shrinkage defects in the Ni based alloy turbine blade. This indicates that numerical simulation is a significant tool in improving casting quality.

关键词:

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

3 0CrMnSi 2A钢飞机主梁疲劳断裂分析

马康民 , 宣建光 , 康进兴

材料工程 doi:10.3969/j.issn.1001-4381.2001.10.012

用扫描电镜观察了某型飞机机翼主梁的疲劳断口,用疲劳条带估算了裂纹扩展寿命,并用Zheng-Hirt公式估算出裂纹尖端应力强度因子范围,估算结果与实验测定值十分接近,从而为研究老龄飞机的使用寿命,进行了有益的探索.

关键词: 机翼主梁 , 30crMnSiNi2A , 疲劳裂纹扩展寿命

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

Monte Carlo simulation of angular distribution and fractionation in the zero-fluence isotope sputtering

Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms

A static Monte Carlo simulation program has been used to study the influence of primary and secondary knock-on atoms on the angular distribution and the fractionation, for zero-fluence sputtering of Mo-92-Mo-100. At 10 keV Xe ion energy, calculations show that significant depth-dependent momentum asymmetry exists in the near-surface region, as in Refs. (L.P. Zheng, R.S. Li, M.Y.LI, Nucl. Instr, and Meth. B 100 (1995) 490; L.P. Zheng, M.Y. Li, Nucl. Instr. and Meth. B 114(1996) 28). The calculations also show that at the polar emission angle range between 0 degrees and 90 degrees the probabilities of the sputtered primary knock-on atoms for Mo-92 and Mo-100 are small (6.1% for Mo-92 and 6.6% for Mo-100), especially, between 0 degrees and 30 degrees they are very small (2.5% for Mo-92 and 2.8% for Mo-100). At 0.1 keV Ar ion energy, the calculations show that partial momentum flux ratios, for the primary and the secondary knock-on atoms, deviate far from one, through marker plane 1 (about an atomic layer distance from the surface). (C) 1998 Elsevier Science B.V. All rights reserved.

关键词: mo-92-mo-100;targets

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

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

Fe80Si9B11非晶合金薄带热膨胀特性和结构弛豫分析

李红 , 孙克 , 李艳萍 , 石毅 , 郭金花 , 卢志超

金属功能材料

提出了采用推杆式热膨胀仪测试非晶合金薄带热膨胀特性的新方法.分析了Fe80Si9B11非晶薄带的热膨胀曲特性和非晶合金晶化过程.根据R.G.Zheng理论分析了结构弛豫中自由体积比变化,发现自由体积比曲线出现双峰.结合晶化前发生相分离的理论分析了这种变化的原因.分析表明:铁基非晶Fe80Si9B11晶化过程中先形成α-Fe(Si)相,再析出Fe3B、二次α-Fe(Si)相.晶化前先发生相分离,自由体积比增大,然后析出结晶相α-Fe(Si),自由体积比降低.随温度升高,B偏聚,自由体积比增大,随后析出Fe3B、二次α-Fe(Si)相,自由体积比降低.

关键词: 铁基非晶薄带 , 热膨胀系数 , 自由体积比 , 结构弛豫

  • 首页
  • 上一页
  • 1
  • 2
  • 下一页
  • 末页
  • 共2页
  • 跳转 Go

出版年份

刊物分类

相关作者

相关热词