Influence of Lamellar Direction in Pearlitic Steel Wire on Mechanical Properties and Microstructure Evolution

被引：0

作者：

Tian-zhang ZHAO ^{[1
]}

Guang-liang ZHANG ^{[2
]}

Shi-hong ZHANG ^{[3
]}

Ling-yun ZHANG ^{[1
]}

机构：

[1] Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University

[2] School of Mechanical Engineering,Taizhou University

[3] Institute of Metal Research,Chinese Academy of Sciences

来源：

Journal of Iron and Steel Research(International) | 2016年 / 23卷 / 12期

基金：

中国国家自然科学基金;

关键词：

pearlitic lamellae; steel wire; drawing; mechanical property; representative volume element;

D O I：

暂无

中图分类号：

TG356.45 [];

学科分类号：

080201 ; 080503 ;

摘要：

During cold drawing of pearlitic steel wire,the lamellar structure becomes gradually aligned with the drawing axis,which contributes to the ultra-high strength.A direct simulation about the mechanical behaviors and microstructural evolution of pearlitic lamellae was presented.A representative volume element( RVE) containing one pearlitic colony was established based on the real transmission electron microscope( TEM) observation.The deformation of pearlitic colony during tension,shear and wire drawing were successfully simulated.The numerical results show that this metallographic texture leads to a strong anisotropy.The colony has higher yielding stress when the lamellar direction is parallel and perpendicular to the tensile direction.The lamellar evolution is strongly dependent on the initial direction and deformation mode.The formation of typical period shear bands is analyzed.In the wire drawing,the pearlitic colony at the sub-surface experiences a complex strain path: rotation,stretching along the die surface,and rotation back.

引用

页码：1290 / 1296

页数：7