研究了Q345D低合金高强度中厚板冲击功、侧膨胀率和断面纤维率与温度之间的关系,并利用Boltzmann函数拟合法对不同厚度Q345D中厚板的韧脆转变温度进行了界定。结果表明：拟合所得到的韧脆转变温度各不相同,而且厚规格试样的韧脆转变温度低于薄规格试样的韧脆转变温度。经过优化Q345D连铸坯的连铸和控轧工艺,使Q345D低温韧性有了大幅度提高。
Relationship among impact energy, lateral expansion, percent of fibroustiy and temperature of HSLA Q345D heavy plate were investigated. Tough-brittle transition temperature （TBTT） was determined on HSLA Q345D heavy plate with different thickness using Boltzmann function fitting method. Results show that TBTT ob- tained through fitting varies from each other, and TBTT of the thicker samples is lower than that of the thin sam- ples. The low temperature toughness of Q345D was improved to a large extent through optimizing process parame ters of continuous casting and controlled rolling process.
参考文献
| [1] | 赵建平,张秀敏,沈士明.材料韧脆转变温度数据处理方法探讨[J].石油化工设备,2004(04):29-32. |
| [2] | 常兆光;王庆贺.随机数据处理方法[M].东营:中国石油大学出版社,1997 |
| [3] | 饶谋生,左上军,刘加高.Boltzmann 函数曲线拟合的 Lisp 程序[J].化学工程与装备,2010(04):23-26. |
| [4] | 肖纪美.金属的韧性与韧化[M].上海:上海科学技术出版社,1982 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%