研究船舶船体建造的钢材等级的微观结构和机械性能
Siavash Imanian Ghazanlou1, Ahmad Mobasher Amini2, Félix-Antoine Carrier2
1Department of Applied Sciences, University of Québec at Chicoutimi (UQAC), 555 Boulevard de l'Université, Saguenay, QC G7H 2B1, Canada.
Materials (Basel, Switzerland)
|December 17, 2024
概括
热力学控制加工 (TMCP) 钢是造船的最佳选择,提供优越的冲击能量吸收,并符合所有ABS海用钢标准. 和炼 (Q和T) 钢具有最好的耐腐蚀性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
- 海洋工程 海洋工程
背景情况:
- 结构钢的选择对于造船的安全性和性能至关重要.
- 了解微观结构变化和机械性能对于优化钢材等级至关重要.
- 现有的钢材等级如Q和T,TMCP和HR具有独特的特性,影响它们适用于海洋应用的适用性.
研究的目的:
- 综合评估用于造船的三种结构钢等级 (Q&T,TMCP,HR).
- 描述微观结构特征并评估机械性能,包括强度,延展性和冲击性.
- 为了在模拟的海洋条件下确定每个钢材等级的腐蚀行为.
主要方法:
- 使用光学显微镜 (OM),扫描电子显微镜 (SEM) 和电子反射散射衍射 (EBSD) 的微结构性表征.
- 机械测试:硬度,拉力 (收益强度,最终拉力强度,延长) 和在各种温度下进行Charpy冲击测试.
- 通过潜在动力学极化试验对腐蚀进行评估.
主要成果:
- Q和T钢表现出最精细的微观结构和最高的硬度,屈服强度和最终的抗拉强度,但延伸度最低.
- TMCP钢呈现出平衡的微结构,符合所有ABS海用钢标准 (YS,UTS,El %),并显示出最高的冲击能量吸收.
- HR钢具有优越的度强度,但不符合UTS标准;Q和T钢显示出最高的耐腐蚀性,其次是HR和TMCP.
结论:
- 由于其平衡的机械性能和符合ABS标准,TMCP钢是船舶建造的最佳选择.
- Q&T钢提供优越的强度和耐腐蚀性,但缺乏足够的性,以满足一些造船需求.
- 该研究为在苛刻的海洋环境中选择合适的结构钢提供了关键数据.
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