Extra-strengthening in a harmonic structure designed pure titanium due to preferential recrystallization phenomenon through thermomechanical treatment
Extra-strengthening in a harmonic structure designed pure titanium due to preferential recrystallization phenomenon through thermomechanical treatment
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DOI：
10.1016/j.msea.2020.140227
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发表时间：
2020-10
期刊：
影响因子：
6.4
通讯作者：
B. Sharma;Motoki Miyakoshi;S. Vajpai;G. Dirras;K. Ameyama
中科院分区：
文献类型：
--
作者：
B. Sharma;Motoki Miyakoshi;S. Vajpai;G. Dirras;K. Ameyama
研究了冷轧退火形变热处理（TMP）对Harmonic结构设计工业纯钛（HS-Ti）组织和力学性能的影响。HS-Ti的TMP导致了一种特殊的优先再结晶组织的演变，局部化在壳和壳-芯界面区域。提出并讨论了TMP HS-Ti中这种独特的显微组织演变的潜在机制。TMP处理的HS-Ti试样表现出相当高的强度值和可比的延展性相对于其传统的均匀结构的钛（Homo-Ti）和作为烧结HS-Ti对应。研究表明，通过控制TMP工艺参数，控制核/壳相的体积分数和晶粒尺寸，可以进一步提高谐波结构材料的上级力学性能。
The effect of thermomechanical processing (TMP), consisting of cold rolling followed by annealing, on the microstructure and mechanical properties of Harmonic Structure designed commercially pure Ti (HS–Ti) was studied. The TMP of HS-Ti led to the evolution of a peculiar preferentially recrystallized structure, localized in the Shell and Shell-Core interface regions. The underlying mechanism for such a unique microstructural evolution in the TMP HS-Ti has been proposed and discussed. The TMP treated HS-Ti specimens exhibited considerably higher strength values and comparable ductility with respect to its conventional homogeneous structured Ti (Homo-Ti) and as-sintered HS-Ti counterparts. The present work demonstrated that it is feasible to further enhance the superior mechanical properties of harmonic-structured materials through controlling the volume fraction and the grain size of the Core/Shell via controlling TMP parameters.