A novel texture analysis approach is aimed to elucidate the role of strain path change in extending the superior strain hardening capacity of a twinning-induced-plasticity steel up to the large compressive imposed strains at room temperature, in lights of step-by-step texture modification. In this context, activation of different deformation mechanisms during multi-axial forging (MAF) process is fully studied using macrotexture and microtexture analyses by means of calculating Schmid factors of slip and twinning. Synergetic development of deformation twin and dislocation substructure throughout the 1st MAF pass leads to exponential strain hardening rate. This is correlated with the formation of texture components with twin-favoring (near to <001>) and slip-favoring (near to <111> and <110>) orientations in each compression of one MAF pass. Such cooperation can also be reached for larger imposed strains during the 2nd MAF pass at ∑Ԑ = 2.4. However, it results in a steady-state flow behavior through continuous dynamic recrystallization stemming from turning dislocation cells of slip-favoring grains into the new ultrafine grains. This is phenomenal as can be understandable by recognizing the orientation dependency of dislocation substructures including Taylor lattice and dislocation cells as representatives for deformation twins and cross-slip, respectively. Having grains with dislocation cell and Taylor lattice respectively is the origin of facilitating restoration-based process and twinning activation, which modifies the texture by developing a twofold configuration in the course of imposing strain path change. As the second phase of this study, a detailed analyzation of subsequent mechanical responses of MAFed materials is focused through the room-temperature tensile and compression testing methods with the emphasis on the effect of pre-test microtexture on asymmetrical behavior. The shear-punch test is also used to prove the positive effect of recrystallized grains to enhance the mechanical properties.

一种新颖的织构分析方法旨在通过逐步织构来阐明应变路径变化在将孪生诱导塑性钢的优异应变硬化能力扩展至室温下较大的压缩施加应变中的作用。修改。在这种情况下，通过计算滑移和孪生的施密特因子，利用宏观纹理和微观纹理分析，充分研究了多轴锻造（MAF）过程中不同变形机制的激活。整个第一遍MAF变形双胞胎和位错亚结构的协同发展导致指数应变硬化速率。这与具有双喜好度（<001>附近）和滑爽喜好度（<111>和<110>附近）的纹理成分的形成相关。）方向，一次MAF通过压缩。对于第二次MAF传递中∑Ԑ = 2.4时施加的较大应变，也可以实现这种配合。但是，由于连续的动态再结晶导致稳态流动行为，这种动态再结晶源于将滑移晶粒的位错单元转变为新的超细晶粒。通过识别位错亚结构（包括泰勒晶格和位错单元分别代表变形双胞胎和横向滑移）的取向依赖性，可以理解这一现象。具有分别具有位错单元和泰勒晶格的晶粒是促进基于恢复的过程和孪生活化的起源，孪生活化通过在施加应变路径变化的过程中发展出双重构型来修饰纹理。作为这项研究的第二阶段，通过室温拉伸和压缩测试方法重点研究了MAFed材料后续的机械响应，重点是预测试微观纹理对不对称行为的影响。剪切试验也被用来证明再结晶晶粒增强机械性能的积极作用。