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| 激光拼焊侧围加强板用材分析及性能控制技术 |
| Material Analysis and Performance Control Technology of Laser Tailor Welded Side Reinforcement Panel |
| Received:October 10, 2017 Revised:November 10, 2017 |
| DOI：10.3969/j.issn.1674-6457.2017.06.018 |
| 中文关键词: 激光拼焊板 侧围加强板 材料性能 |
| 英文关键词: tailor welded blanks side reinforcement panel material properties |
| 基金项目: |
| Author Name | Affiliation | | YUAN Zhi-peng | 1. Central Research Institute, Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China
2.State Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel), Shanghai 201900, China | | ZHAO Guang-tao | 1. Central Research Institute, Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China
2.State Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel), Shanghai 201900, China | | ZHOU Shu | 1. Central Research Institute, Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China
2.State Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel), Shanghai 201900, China |
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| 中文摘要: |
| 目的 研究某车型侧围加强板生产稳定性的材料性能。方法 通过对某车型激光拼焊侧围加强板的主要用材TRIP800进行分析，研究不同3种生产批次材料性能和组织上的差异性，包括化学成分、显微组织、残余奥氏体含量、扩孔试验、力学性能、表面粗糙度的测量。结果 3种不同批次材料生产后，两种批次满足生产稳定要求，一种批次不能满足稳定生产要求，识别了TRIP800材料影响零件冲压开裂的关键性能指标，主要为材料伸长率及硬化指数。结论 针对某侧围加强板的生产稳定性，材料伸长率大于25%，硬化指数n值不低于0.18的情况下，能够满足稳定生产。扩孔试验结果表明，该零件的成形过程中，扩孔率并不是唯一影响开裂的性能指标。 |
| 英文摘要: |
| The work aims to analyze material properties on production stability of side reinforcement panel. Main properties of TRIP800, which were used to reinforce the plate, were used to analyze performance and organizational differences of three production batches, including analysis of chemical composition, microstructure and residual austenite content, test of bore hole and measurement of mechanical properties and surface roughness. After production of three different batches, two batches met requirements on production stability, one batch failed to meet the requirements. Key performance indexes for impact of TRIP800 material on stamping cracking of parts were identified, mainly the material elongation and strain hardening index. To meet production stability of side reinforcement panel, the elongation of materials should be more than 25% and the value of n should be not less than 0.18. Results of the hole expansion test show that the hole expansion rate is not the only performance index that affects the cracking process. |
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