Texture Simulation of Shear Bands in B.C.C. Metals Using Taylor-Based Models

• Main Authors: Tsung-YangPeng, 彭琮洋
• Other Authors: Jui-Chao Kuo
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/06800521152517636661

碩士 === 國立成功大學 === 材料科學及工程學系 === 104 === Four kinds of strain tensor in shear bands and full-constraint Taylor model were combined to simulate the texture inside shear bands on B.C.C. (111) [112 ̅] single crystals. Orientation inside shear bands rotates along ±TD while only one slip system {110}〈111〉 or {112}〈111〉 is activated. Random texture inside shear bands are observed assuming one slip system ({123}〈111〉), two slip systems ({110}〈111〉 and {112}〈111〉, {110}〈111〉 and {123}〈111〉, {112}〈111〉 and {123}〈111〉) and three slip systems ({110}〈111〉, {112}〈111〉 and {123}〈111〉). Also, simulations were done on polycrystalline B.C.C. by full-constraint Taylor model. The complete -fiber are shown under 60% reduction ratio assuming two slip systems ({110} 〈111〉 and {112} 〈111〉, {110}〈111〉 and {123} 〈111〉) and three slip system ({110}〈111〉, {112}〈111〉 and {123}〈111〉).