Investigation on microstructure and properties of 0.17% carbon steel with dispersed cementite particles

被引：6
|
作者：
Jia, Tao [1 ]
Feng, Jie [1 ,2 ]
Wang, Bin [1 ]
Wang, Guodong [1 ]
Li, Yu [3 ]
机构：
[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
[2] State Intellectual Property Off, Patent Off, Patent Examinat Cooperat Ctr, Guangzhou 510530, Guangdong, Peoples R China
[3] China Iron & Steel Assoc, Dev & Environm Protect Dept, Beijing 100711, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 225卷
基金：
中国国家自然科学基金;
关键词：
Cementite; Ultra-fast cooling; Thermo-mechanical treatment; Impact toughness; Degenerated pearlite; IMPACT TOUGHNESS; MICROALLOYED STEELS; NANOSCALE CEMENTITE;
D O I：
10.1016/j.jmatprotec.2015.06.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using "ultra fast cooling (UFC) + thermo-mechanical treatment (TMT)" process, nanoscale cementite particles were obtained while the matrix varied from "proeutectoid ferrite + degenerated pearlite" to complete lath-like bainitic matrix by controlling the UFC stop temperature. Microstructures were examined by optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Results showed that TMT process promoted cementite precipitation in proeutectoid ferrite, leading to more uniformly distributed cementite particles. The tensile properties and Charpy V-notch (CVN) impact toughness were evaluated. The correlation with the microstructural features is then discussed in details. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：318 / 325
页数：8
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