高淬透性硼微合金化特厚板鋼成分優化設計

高志玉; 潘濤; 王卓; 劉國權; 蘇航

doi:10.13374/j.issn2095-9389.2015.04.008

高淬透性硼微合金化特厚板鋼成分優化設計

doi: 10.13374/j.issn2095-9389.2015.04.008

高志玉^1,2,
潘濤³,
王卓³,
劉國權^1,4, ,,
蘇航³

1. 北京科技大學新金屬材料國家重點實驗室, 北京 100083;
2. 遼寧工程技術大學材料科學與工程學院, 阜新 123099;
3. 鋼鐵研究總院工程用鋼研究所, 北京 100081;
4. 北京科技大學材料科學與工程學院, 北京 100083

基金項目:

國家科技支撐計劃資助項目(2011BAE25B01)

國家自然科學基金資助項目(51071019)

國家高技術研究發展計劃資助項目(2013AA031601)

詳細信息

通訊作者:
劉國權,E-mail:G.liu@ustb.edu.cn

中圖分類號: TG142.1
計量
- 文章訪問數: 338
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- PDF下載量: 13
- 被引次數: 0
出版歷程
- 收稿日期: 2014-03-20
- 網絡出版日期: 2021-07-10

Composition optimization design of boron-microalloying ultra-heavy plate steel high hardenability

GAO Zhi-yu^1,2,
PAN Tao³,
WANG Zhuo³,
LIU Guo-quan^{1,4
, ,},
SU Hang³

1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;
2. College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123099, China;
3. Division of Engineering Steel, Central Iron and Steel Research Institute, Beijing 100081, China;
4. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 海洋工程用特厚板鋼通常要求具有良好的淬透性,合理設計此類鋼化學成分是改善其淬透性的主要方法之一.傳統鋼成分設計大多以實驗為主,耗費巨大.本文以熱力學計算軟件Thermo-Calc和材料性能計算軟件JMat Pro為工具,采用計算、預測與實驗相結合的研究模式,對含B微合金化特厚板鋼進行成分優化,以期獲得高淬透性能.使用Thermo-Calc計算了B微合金化鋼的熱力學平衡析出相.通過對析出相的析出溫度、析出量及相間關系分析,闡述了此類鋼的成分設計原則,給出了可獲得高淬透性的B微合金化鋼的設計成分.采用JMat Pro對設計鋼淬透性進行預測,預測結果很好地說明了設計鋼成分的合理性.經過淬透性實驗和化學相分析,進一步肯定了優化設計結果.理論計算與實驗結果表明高鋁含量有利于改善硼微合金化鋼淬透性.
- 厚板鋼 /
- 微合金化 /
- 硼 /
- 化學成分 /
- 優化設計 /
- 淬透性
Abstract: Ultra-heavy plate steel for marine engineering usually requires good hardenability, and rational design of chemical composition of this steel is one of the main methods for improving its hardenability. Traditional composition design of steel is mostly experiment-based and costly. In this paper, thermodynamic calculation software Thermo-Calc and material property calculation software JMatPro were introduced to design the chemical composition of B-containing micro-alloyed ultra-heavy plate steel, with calculation, prediction and testing combined to obtain high hardenability. Thermodynamic equilibrium precipitates in the steel were calculated with Thermo-Calc. Composition design principles were interpreted for the steel from the perspective of thermodynamics by analyzing the precipitation temperature; precipitation amount and phase relationships, and then the chemical composition of the steel with high hardenability was designed. In addition, the hardenability of the steel designed was predicted using JMatPro and the results illustrates that the composition design of the steel is feasible. The rationality of the optimization design was further affirmed by hardenability testing and chemical analysis. Theoretical calculation and experimental results show that high aluminum content can help to improve the hardenability of the steel.
- heavy plate steel /
- microalloying /
- boron /
- chemical composition /
- optimization design /
- hardenability