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火温度对S355钢的微观结构和引起的裂变易感性的影响
Chunyan Yan1, Shenglin Zhang1, Lingchuan Zhou1
1College of Materials Science and Engineering, Hohai University, Changzhou 213022, China.
Materials (Basel, Switzerland)
|March 13, 2025
概括
火温度对S355钢有很大的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 腐蚀工程 腐蚀工程
背景情况:
- S355钢是容易受到引裂变 (HIC) 的.
- 了解热处理对HIC的影响对于材料完整性至关重要.
- 火温度是影响钢的微观结构和性能的一个关键参数.
研究的目的:
- 为了研究火温度对S355钢微结构的影响.
- 评估火温度对引裂变 (HIC) 易感性的影响.
- 为了阐明微观结构和脆化之间的关系.
主要方法:
- 微观结构的表征 (例如,马石,贝尼特形成).
- 透测试 (HP) 测试以评估的扩散和度.
- 缓慢应变速率拉伸 (SSRT) 和带的裂纹试验,以确定HIC易受性.
- 微印技术 (HMT) 用于分布分析.
主要成果:
- 微观结构从较低温度的拉斯马石 (LM) 和拉斯贝尼石 (LB) 到较高温度的LM主要存在差异.
- 脆度指数 (I_z) 在950°C时最小,在1050°C时最大.
- 更高的火温度 (例如,1050°C) 显示出更低的扩散系数,但更高的度和陷密度.
- 马丁石接口作为有效的陷,影响裂的传播.
结论:
- 火温度对S355钢的微观结构和HIC电阻产生重大影响.
- 优化火温度对于减轻S355钢中的脆性至关重要.
- 马丁石接口在气捕获和断裂行为中发挥着重要作用.
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