Microstructure Characteristics and Mechanical Properties of X80 Pipeline Steels

被引：1

作者：

周民

机构：

[1] StateKeyLabofRollingTechnologyandAutomation,NortheasternUniversity

来源：

JournalofWuhanUniversityofTechnology(MaterialsScienceEdition) | 2012年 / 27卷 / 02期

关键词：

X80 pipeline steel; mechanical properties; higher angle grain boundaries; effective grain size;

D O I：

暂无

中图分类号：

TG142.4 [各种钢材：按用途区分];

学科分类号：

080502 ;

摘要：

The relation between microstructure characteristics and mechanical properties of X80 pipeline steels was investigated using optical microscopy,scanning electron microscopy,etc.It is shown that the structure consists of polygonal ferrite(PF),quasi-polygonal ferrite(QPF),acicular ferrite(AF),and granular bainitic ferrite(GF).With increasing volume fraction of M-A islands(below 3%),the yield strength increases.With increasing content of higher angle grain boundaries(HAGBs),the yield strength,elongation,and DWTT properties at-15 ℃ increase,and the volume fraction of M-A islands reaches its highest point in the steel containing the most volume fraction of GF.

引用

页码：252 / 255

页数：4

共 8 条

[1] 粒状贝氏体中残余奥氏体机械稳定性与强韧性关系 [J].

张明星 ;

康沫狂 .

金属热处理学报, 1993, (01) :14-19

[2]

Relation among rolling parameters, microstructures and mechanical properties in an acicular ferrite pipeline steel[J] . Wei Wang,Wei Yan,Lin Zhu,Ping Hu,Yiyin Shan,Ke Yang. Materials and Design . 2009 (9)

[3]

Transmission electron microscopy of martensite/austenite islands in pipeline steel X70[J] . Chunming Wang,Xingfang Wu,Jie Liu,Ning’an Xu. Materials Science & Engineering A . 2006

[4]

Acicular ferritic microstructure of a low-carbon Mn–Mo–Nb microalloyed pipeline steel[J] . Furen Xiao,Bo Liao,Deliang Ren,Yiyin Shan,Ke Yang. Materials Characterization . 2005 (4)

[5]

Dynamic deformation behavior of ultrafine-grained low-carbon steels fabricated by equal-channel angular pressing[J] . Byoungchul Hwang,Yang Gon Kim,Han Sang Lee,Sunghak Lee,Byoung Doo Ahn,Dong Hyuk Shin,Chang Gil Lee. Metallurgical and Materials Transactions A . 2005 (2)

[6] Effective grain size and charpy impact properties of high-toughness X70 pipeline steels [J].

Hwang, B ;

Kim, YG ;

Lee, S ;

Kim, YM ;

Kim, NJ ;

Yoo, JY .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2005, 36A (08) :2107-2114

[7]

Analysis of different acicular ferrite microstructures generated in a medium-carbon molybdenum steel[J] . Materials Science & Engineering A . 2003 (1)

[8]

Continuous cooling transformation of undeformed and deformed low carbon pipeline steels[J] . Ming-Chun Zhao,Ke Yang,Fu-Ren Xiao,Yi-Yin Shan. Materials Science & Engineering A . 2003 (1)

← 1 →