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付秀娟,鲁江,赵严,叶港.初始织构对差厚板非均匀塑性变形的影响[J].稀有金属材料与工程(英文),2021,50(8):2721~2727.[Fu Xiujuan,Lu Jiang,Zhao Yan and Ye Gang.Influence of Initial Texture on Inhomogeneous Plastic Defor-mation of Tailor Rolled Blank[J].Rare Metal Materials and Engineering,2021,50(8):2721~2727.]
Influence of Initial Texture on Inhomogeneous Plastic Defor-mation of Tailor Rolled Blank
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Received:June 29, 2020  
DOI:
Key words: tailor rolled blank (TRB)  crystal plasticity finite element method  texture  plastic deformation  slip system
Foundation item:the National Nature Science Foundation of China (No. 51575406).
Author NameAffiliation
Fu Xiujuan,Lu Jiang,Zhao Yan and Ye Gang  
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Abstract:
      Different textures are formed in different thickness zones of CR340 tailor rolled blank (TRB) during rolling, including {111}<01> and {141}<22> textures in the thin zone, {225}<10> and {211}<01> textures in the transition zone, and {876}<5> and {411}<01> textures in the thick zone. The polycrystalline plastic finite element model in different thickness zones was established based on the results of EBSD test to study the influence of grain structure in different thickness zones on the activation of slip system and stress-strain distribution under uniaxial tension. The results show that the {111}<01> texture of thin zone and {876} <5> texture of thick zone are conducive to slip system activation, and 8 and 9 sets of slip systems are activated, respectively, which weaken stress concentration of equal thickness zone in the deformation process, so equal thickness zone has good plastic deformation behavior. However, the grain slip system of {225}<10> and {211}<01> textures in transition zone is less activated, and the number of activation is just 6 and 7, respectively, which lead to the high stress concentration, and thus the plastic deformation behavior is poor. The TRB presents obvious non-uniformity in plastic deformation because of the difference in texture of each thickness region, and the fracture position of the TRB appears in the transition zone with poor plastic deformation during uniaxial tension.