Q390钢韧脆转变区冲击吸收功的类主曲线模型

doi:10.12068/j.issn.1005-3026.2018.05.012

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (5): 663-667.DOI: 10.12068/j.issn.1005-3026.2018.05.012

Q390钢韧脆转变区冲击吸收功的类主曲线模型

孔祥伟^1,2，李绪清^1,2，兰亮云¹，岳梦龙^1,2

(1. 东北大学机械工程与自动化学院，辽宁沈阳110819; 2. 东北大学航空动力装备振动及控制教育部重点实验室，辽宁沈阳110819)

收稿日期:2017-06-26 修回日期:2017-06-26 出版日期:2018-05-15 发布日期:2018-05-25
通讯作者: 孔祥伟
作者简介:孔祥伟(1970-)，男，辽宁鞍山人，东北大学教授.
基金资助:
国家自然科学基金资助项目(51641503).

Impact-Energy Principle Resembling Master Curve Model of Q390 Steel in Transition Temperature Region

KONG Xiang-wei^{1, 2}， LI Xu-qing^1,2， LAN Liang-yun¹， YUE Meng-long^1,2

1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion System， Ministry of Education， Northeastern University， Shenyang 110819， China.

Received:2017-06-26 Revised:2017-06-26 Online:2018-05-15 Published:2018-05-25
Contact: KONG Xiang-wei
About author:-
Supported by:
-

摘要/Abstract

摘要： 采用夏比冲击试验、主曲线法思想及冲击吸收功与断裂韧性的经验公式对Q390低合金高强度钢在韧脆转变区冲击吸收功的分布规律进行了研究.通过夏比冲击试验得到的冲击试验特征温度，求得主曲线的参考温度，进而获得Q390钢的主曲线表达式.在考虑冲击试样厚度的影响下，结合最适用于Q390钢的经验公式，最终得到Q390钢韧脆转变区内冲击吸收功的类主曲线分布模型.结果表明，该模型能很好地描述Q390钢韧脆转变区内冲击吸收功、温度以及累计失效概率之间的关系，在一定程度上拓展了主曲线法的应用.

关键词: Q390钢, 冲击吸收功, 主曲线, 韧脆转变区, 夏比冲击试验, 经验公式

Abstract: The impact energy distribution law of Q390 low-alloy and high-strength steel in transition temperature region was investigated by using the Charpy impact test， the idea of the Master Curve method and the empirical correlations between impact energy and fracture toughness. The Master Curve reference temperature was obtained by the Charpy impact tests. And then the Master Curve expression of Q390 steel was regressed from the Master Curve reference temperature. Besides， considering the influence of the thickness of impact specimen， the impact-energy principle resembling Master Curve distributive model of Q390 steel in transition temperature region was finally acquired by combining the empirical correlation which was most suitable for Q390 steel. The results show that this model fairly describes the relationship among the impact energy， the temperature and the cumulative failure probability in transition temperature region of Q390 steel， and expands the application of the Master Curve method to a certain extent.

Key words: Q390 steel, impact energy, Master Curve, transition temperature region, Charpy impact test, empirical correlation

中图分类号:

TG111.91

孔祥伟，李绪清，兰亮云，岳梦龙. Q390钢韧脆转变区冲击吸收功的类主曲线模型[J]. 东北大学学报:自然科学版, 2018, 39(5): 663-667.

KONG Xiang-wei ， LI Xu-qing， LAN Liang-yun， YUE Meng-long. Impact-Energy Principle Resembling Master Curve Model of Q390 Steel in Transition Temperature Region[J]. Journal of Northeastern University Natural Science, 2018, 39(5): 663-667.

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Q390钢韧脆转变区冲击吸收功的类主曲线模型

Impact-Energy Principle Resembling Master Curve Model of Q390 Steel in Transition Temperature Region

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