Shang, X., Zhou, J., Zhuo, F., Luo, Y., Li, Y.
55754767700;56510510800;56567817700;55712634000;55920661500;
Defect Prediction and Control for Ultra-high-strength Steel Complex Structure in Hot Forming Based on FEM
(2015) Journal of Materials Engineering and Performance, 24 (6), pp. 2390-2400.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930209246&doi=10.1007%2fs11665-015-1502-5&partnerID=40&md5=a267df5df865763ecf4ba757b9086639

DOI: 10.1007/s11665-015-1502-5
归属机构: College of Material Science and Engineering, Chongqing University, No. 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
摘要: Cracking is the main defect in ultra-high-strength steel (UHSS) forming products. In order to avoid cracking, either adjusting process parameters or changing die’s design is usually applied. However, under the condition of forming parts with unreasonable structure design, it makes little difference through the traditional methods of modifying process parameters. In this paper, true stress-strain curves under different strain rates and temperatures are obtained via the hot tensile tests. Then, the material constitutive model of UHSS is introduced into software CAE; this step is used to analyze and predict defects of UHSS hot forming complex structural parts based on FEM. In addition, simulation results of changed structure (open end) are compared with original structure (closed end). The results have shown that both maximum reduction ratio and stress in all directions are sharply reduced, i.e., the forming quality is improved significantly after changing the end structure. Finally, the prediction and control methods of forming defects are verified to be feasible in actual production. © 2015, ASM International.
作者关键字: complex structural parts;  forming defect;  numerical simulation;  prediction and control;  ultra-high strength steel
索引关键字: Computer simulation; Cracks; Defects; Forecasting; Steel heat treatment; Strain rate; Stress-strain curves; Tensile testing, Changed structures; Complex structural parts; Forming defects; Material constitutive models; Original structures; Prediction and control; True stress strain curve; Ultra high strength steel, High strength steel
通讯地址: Zhou, J.; College of Material Science and Engineering, Chongqing University, No. 174 Shazhengjie, Shapingba District, China
出版商: Springer New York LLC
ISSN: 10599495
CODEN: JMEPE
原始文献语言: English
来源出版物名称缩写: J Mater Eng Perform
文献类型: Article
来源出版物: Scopus