Extra-strengthening in a harmonic structure designed pure titanium due to preferential recrystallization phenomenon through thermomechanical treatment

被引：21

作者：

Sharma, Bhupendra ^{[1
]}

Miyakoshi, Motoki ^{[2
]}

Vajpai, Sanjay Kumar ^{[3
]}

Dirras, Guy ^{[4
]}

Ameyama, Kei ^{[5
]}

机构：

[1] Ritsumeikan Univ, Res Org Sci & Technol, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan

[2] Ritsumeikan Univ, Coll Sci & Engn, Dept Mech Engn, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan

[3] Natl Inst Technol, Dept Met & Mat Engn, Jamshedpur, Bihar, India

[4] Univ Sorbonne Paris Nord, LSPM CNRS, 99 Ave Jean Baptiste Clement, F-93430 Villetaneuse, France

[5] Ritsumeikan Univ, Fac Sci & Engn, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 797卷

基金：

日本学术振兴会;

关键词：

Harmonic structure; Pure-Ti; Powder metallurgy; Recrystallization; Thermo-mechanical process; Strength-ductility synergy; GRAIN-SIZE DISTRIBUTION; HIGH-TENSILE DUCTILITY; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; FLOW-STRESS; MICROSTRUCTURE; GRADIENT; ALLOY; PLASTICITY; DEPENDENCE;

D O I：

10.1016/j.msea.2020.140227

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页数：9