Correlation between microstructural features of granular bainite, roughness of fracture surface and toughness of simulated CGHAZ in QT type HSLA steels
文献类型：期刊论文
| 作者 | D. W. Tian ; L. P. Karjalainen ; B. N. Qian ; X. F. Chen |
| 刊名 | Scandinavian Journal of Metallurgy
 |
| 出版日期 | 1996 |
| 卷号 | 25期号:2页码:87-94 |
| 关键词 | granular bainite M-A constituents toughness roughness cleavage fracture fracture profile simulated CGHAZ QT-HSLA steels heat-affected zones general-method cleavage metals |
| ISSN号 | 0371-0459 |
| 中文摘要 | Background/aims. In order to understand the interrelation between microstructure and toughness in modern high-strength steels, the main attention has been paid to the role of martensite-austenite particles as a site of crack initiation in granular bainite. An effort was undertaken here to investigate the microstructural factors affecting the propagation of the cleavage fracture. Methods. Charpy-V impact testing and tensile testing were carried out at low temperatures using specimens with a microstructure of simulated coarse-grained heat-affected zone in quenched and tempered, high-strength low-alloyed steels. Electron microscopy was employed to examine the interaction between a cleavage crack and the microstructural constituents on the fracture profile. Results and conclusions. Kinks of 7 types were detected on the fracture profile. They were further classified into 3 categories by their effects on toughness. Beneficial, harmful and non-effective kinks resulted from high-angle interfaces, mariensite-austenite constituents and the intersection of 2 individual straight microcracks, respectively. All kinks increased roughness, but the beneficial kinks favored, the harmful deteriorated, and the non-effective did not affect toughness. Accordingly, it can be concluded that toughness cannot be estimated reliably from roughness measurements. (C) Munksgaard, 1996 |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/38409]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | D. W. Tian,L. P. Karjalainen,B. N. Qian,et al. Correlation between microstructural features of granular bainite, roughness of fracture surface and toughness of simulated CGHAZ in QT type HSLA steels[J]. Scandinavian Journal of Metallurgy,1996,25(2):87-94. |
| APA | D. W. Tian,L. P. Karjalainen,B. N. Qian,&X. F. Chen.(1996).Correlation between microstructural features of granular bainite, roughness of fracture surface and toughness of simulated CGHAZ in QT type HSLA steels.Scandinavian Journal of Metallurgy,25(2),87-94. |
| MLA | D. W. Tian,et al."Correlation between microstructural features of granular bainite, roughness of fracture surface and toughness of simulated CGHAZ in QT type HSLA steels".Scandinavian Journal of Metallurgy 25.2(1996):87-94. |
入库方式： OAI收割
来源：金属研究所
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