Multiscale Architecture and Superior High‐Temperature Performance of Discontinuously Reinforced Titanium Matrix Composites

材料科学 复合材料 微观结构 延展性(地球科学) 极限抗拉强度 蠕动 结构材料 各向同性 冶金 量子力学 物理
作者
Lujun Huang,Qi An,Lin Geng,Shuai Wang,Shang Jiang,Xiping Cui,Rui Zhang,Fengbo Sun,Yang Jiao,Xin Chen,Cunyu Wang
出处
期刊:Advanced Materials [Wiley]
卷期号:33 (6) 被引量:233
标识
DOI:10.1002/adma.202000688
摘要

Abstract Discontinuously reinforced titanium matrix composites (DRTMCs), as one of the most important metal matrix composites (MMCs), are expected to exhibit high strength, elastic modulus, high‐temperature endurability, wear resistance, isotropic property, and formability. Recent innovative research shows that tailoring the reinforcement network distribution totally differently from the conventional homogeneous distribution can not only improve the strengthening effect but also resolve the dilemma of DRTMCs with poor tensile ductility. Based on the network architecture, multiscale architecture, for example, two‐scale network and laminate‐network microstructure can further inspire superior strength, creep, and oxidation resistance at elevated temperatures. Herein, the most recent developments, which include the design, fabrication, microstructure, high‐temperature performance, strengthening mechanisms, and future research opportunities for DRTMCs with multiscale architecture, are captured. In this regard, the service temperature can be increased by 200 °C, and the creep rupture time by 59‐fold compared with those of conventional titanium alloys, which can meet the urgent demands of lightweight nickel‐based structural materials and potentially replace nickel base superalloys at 600–800 °C to reduce weight by 45%. In fact, multiscale architecture design strategy will also favorably open a new era in the research of extensive metallic materials for improved performances.
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