材料期刊网

Sliding Wear Behavior of Plasma Sprayed Alumina-Based Composite Coatings against Al2O3 Ball

Minh-quy Le , Young-hun Chae , Seock-sam Kim

材料科学技术（英文）

The sliding wear behaviors of a single layer Al2O3-30 wt pct ZrO2, a double layer Al2O3-30 wt pct ZrO2/Ni-Cr and a single layer Al2O3-13 wt pct TiO2 coating deposited on low carbon steel by plasma spraying were investigated under lubricated conditions with various normal loads. The plastic deformati...

关键词: Coating , null , null

Effect of Doping and High-Temperature Annealing on the Structural and Electrical Properties of Zn_1-XNi_XO(0≤X≤0.15) Powders

Hakan Colak

材料科学技术（英文）

This paper reported the synthesis, crystal structure and electrical conductivity properties of Ni-doped ZnO powders (i.e. Zn_1-XNi_XObinary system, X=0, 0.0025, 0.005, 0.0075 and in the range 0.01≤X

关键词: II-VI semiconductors

Acoustic emission inspection of Portevin-Le Chatelier effect and deformation mechanisms of two Mg-Li-Al alloys

Journal of Materials Science

In this paper, Portevin-Le Chatelier (PLC) effect of LA41 magnesium alloy is reported. With increasing strain rate, both ultimate tensile stresses (sigma(b)) and 0.2% proof (sigma(0.2)) stresses increase, while serrations become less severe. Major acoustic emission (AE...

关键词: tensile deformation;magnesium alloys;bands;az31

A Macroscopic Model for the Portevin-Le Chatelier Effect

材料科学技术（英文）

关键词:

Portevin-Le Chatelier Effect in Nimonic 263 Superalloy

Guo-Ming Han , Cheng-Gang Tian , Chuan-Yong Cui , Zhuang-Qi Hu , Xiao-Feng Sun

金属学报 doi:10.1007/s40195-015-0230-z

关键词:

Mathematical Analysis on the Uniqueness of Reverse Algorithm for Measuring Elastic-plastic Properties by Sharp Indentation

Yongli Huang

材料科学技术（英文）

The reverse analysis provides a convenient method to determine four elastic-plastic parameters through an indentation curve such as Young's modulus E, hardness H, yield strength σ_y and strain hardening exponent n. In this paper, mathematical analysis on a r...

关键词: Elastic-plastic properties , null , null , null , null

Mathematical Analysis on the Uniqueness of Reverse Algorithm for Measuring Elastic-plastic Properties by Sharp Indentation

Yongli Huang

材料科学技术（英文）

The reverse analysis provides a convenient method to determine four elastic-plastic parameters through an indentation curve such as Young's modulus E, hardness H, yield strength σ_y and strain hardening exponent n. In this paper, mathematical analysis on a r...

关键词: Elastic-plastic properties , null , null , null , null

(Mg_1-xSr_x)₂Al₄Si₅O₁₈陶瓷的显微结构与微波介电性能研究

宋开新 , 杨岳强 , 郑鹏 , 徐军明 , 秦会斌

无机材料学报 doi:10.3724/SP.J.1077.2012.00575

采用固相烧结反应法制备(Mg_1-xSr_x)₂Al₄Si₅O₁₈陶瓷. Sr掺杂促进低温相β-Mg2Al4Si5O18向高温相α-Mg...

关键词: Mg₂Al₄Si₅O₁₈; SrAl₂Si₂O₈; 微波性能

TWIP钢不同温度变形的力学性能变化规律及机理研究

王书晗刘振宇张维娜王国栋

金属学报

通过控温拉伸实验分析了在298, 373, 473和673 K温度下变形时, TWIP钢(Fe--25Mn--3Si--3Al)力学性能和显微组织的变化规律. 结果表明, TWIP钢的强度和延伸率均随温度的升高而降低. 通过热力学公式对不同温度下TWIP钢层错能$\it\Gamma$的估算可以推断,...

关键词: 形变孪晶 , high temperature deformation , deformation mechanism , stacking fault energy

正交梯度下双扩散对流的数值模拟

石科峰 , 卢文强

工程热物理学报

本文采用有限单元法求解涡量、流函数、能量和组分控制方程,数值模拟了在温度梯度和浓度梯度正交情况下竖直环形容器内的双扩散对流结构.通过改变浮升力比N=GrS/GrT和Le数的大小,分析了溶质浮升力方向及其大小和

关键词: 边界层 , 双扩散对流 , 有限单元法