Site-specific analysis of precipitates during the coiling of an HSLA steel containing V and Nb

被引：2

作者：

Gu, Chen ^{[1
]}

Scott, Colin ^{[2
]}

Fazeli, Fateh ^{[2
]}

Wang, Xiang ^{[3
]}

Bassim, Nabil ^{[1
,3
]}

Zurob, Hatem ^{[1
]}

机构：

[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L8, Canada

[2] Nat Resources Canada, Canmet Mat, 183 Longwood Rd South, Hamilton, ON L8P 0A5, Canada

[3] McMaster Univ, Canadian Ctr Electron Microscopy, Hamilton, ON L8S 4M1, Canada

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2023年 / 27卷

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

HSLA; Clusters; Precipitation; Site; -specific; Mechanical properties; STRAIN-INDUCED PRECIPITATION; ATOM-PROBE TOMOGRAPHY; X70 PIPELINE STEEL; STRENGTHENING MECHANISMS; INTERPHASE PRECIPITATION; TEXTURE EVOLUTION; YIELD-STRESS; BEHAVIOR; MICROSTRUCTURE; TEMPERATURE;

D O I：

10.1016/j.jmrt.2023.11.081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Precipitation in a high-strength low-alloy steel containing V and Nb additions during coiling at 500 degrees C, was investigated by advanced characterization techniques including electron backscattered diffraction, focused ion beam, transmission electron microscopy and atom probe tomography. During coiling, nano precipitates were preferentially formed around dislocations and grain/sub-grain boundaries in the high Kernel Average Misorientation (KAM) areas associated with bainite. Precipitates were frequently observed around cementite in the low KAM areas with cementite which were identified as granular bainite. Interphase clusters were found in the low KAM areas associated with ferrite. The site-specific methods reveal the co-existence of different kinds of precipitates. Analysis of the results indicates that the precipitation of microalloy particles close to cementite could lower the precipitation hardening contribution that could be achieved through microalloying.

引用

页码：6308 / 6318

页数：11

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