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论文类型：期刊论文

发表时间：2015-09-01

发表刊物：ACTA METALLURGICA SINICA-ENGLISH LETTERS

收录刊物：SCIE、EI、Scopus

卷号：28

期号：9

页面范围：1198-1204

ISSN号：1006-7191

关键字：Tailor rolled blank (TRB); Nonuniform deformation; Uniaxial tension; Annealing; Metallographical

摘要：The deformation characteristics of tailor rolled blank (TRB) in the course of uniaxial tension were studied by means of analysis, test and simulation. The mechanical analytical model of TRB during uniaxial tension was set up, and the deformation formulae for the thinner side and for the thicker side were derived to quantify the deformation of TRB. On this basis, uniaxial tension tests on TRB and ordinary blanks (the thinner side and the thicker side of TRB) were conducted. Lagrange polynomial interpolation method was adopted to construct the stress-strain fields of unannealed and annealed TRBs for solving TRB material parameters, and then, uniaxial tension simulation on TRB was completed. Deformations and properties of unannealed TRB were compared with those of annealed TRB, and the thinner side and the thicker side were also compared. Finally, the research results were explained by metallurgical structure. The results show that nonuniform deformation happens in TRB during uniaxial tension, and the necking occurs on the thinner side. The agreement of analysis, test and simulation confirms the correctness of the analytical model and the deformation formulae. The findings of this paper can lay the foundation for the future study on TRB stamping formability and provide a way for TRB modeling.