Crystallographic Textures Resulting from Severe Shear Deformation in Machining
Crystallographic Textures Resulting from Severe Shear Deformation in Machining
复制标题
机械加工中严重剪切变形产生的晶体织构
DOI：
10.1007/s11661-014-2672-8
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. Ravi Shankar
中科院分区：
文献类型：
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作者：
S. Basu;M. Ravi Shankar
利用平面应变加工（PSM）在加工相关的热机械条件下创建的表面上的纹理的演变进行了研究和比较芯片。通过分析取向分布函数，它表明，在表面上的纹理是由突出的和独特的纤维。通过分析芯片和表面的极图，它表明，这两种纹理具有彼此不同的功能，即使在传统上被认为是可比的表面和芯片上的微观结构的规模。使用PSM的高速成像的原位表征与粘塑性自洽（VPSC）模型相结合，并用于预测芯片和表面中的极图。PSM的有限元模型的生成和耦合的VPSC模型，以创建一个完全的计算路线预测加工纹理。
Evolution of textures on surfaces created using plane strain machining (PSM) under machining-relevant thermomechanical conditions is studied and compared against that in the chips. By analyzing orientation distribution functions, it is shown that the texture on the surface is comprised of prominent and distinct fibers. By analyzing the pole figures of chips and the surface, it is shown that the two textures have features distinct from one other, even though the scale of the microstructure on the surface and the chips are traditionally considered to be comparable. In situ characterization using high speed imaging of PSM is coupled with a visco-plastic self-consistent (VPSC) model and is used to predict the pole figures in the chip and the surface. A finite element model of PSM is generated and coupled with the VPSC model to create a fully computational route for predicting textures from machining.