Introducing β-Ti ductile-zones for enhancing both strength and ductility in heterostructured titanium alloy composites

IF 7.5 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Letters Pub Date : 2024-11-27 DOI:10.1080/21663831.2024.2432416

Xiaoqi Mao, Lianwen Wang, Guodong Sun, Xuezhe Zhang, Yongqing Fu, Longlong Dong

引用次数: 7

Abstract

Breaking trade-off barriers of strength-ductility in Ti alloys and their composites has been a key challenge for their engineering applications. Herein, we developed a new strategy of introducing β-Ti ductile zones in heterostructured (Cu@CNTs/TC4)+TC18 composites, which were synthesized using two-stepped ball milling, spark plasma sintering and hot rolling processes. Such composites are composed of TC18-coarse grain zones (CGZ) and (TiC+α'')-reinforced TC4-fine grain zones (FGZ). They achieve an exceptional high strength and high ductility, which are superior to those of TC4 alloys and homogeneous Cu@CNTs/TC4 composites. Heterogeneous interfacial microstructures of TC4-FGZ/TC18-CGZ play an important role in strengthening and toughening effects. The grain-coordinated deformation between TC18-CG and TC4-FG is also the key reason for achieving an exceptional ductility.

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引入β-Ti延性区，提高异质钛合金复合材料的强度和延性

打破钛合金及其复合材料的强度-塑性平衡障碍是其工程应用的关键挑战。在此，我们开发了一种新的策略，在异质结构(Cu@CNTs/TC4)+TC18复合材料中引入β-Ti韧性区，该复合材料采用两步球磨、火花等离子烧结和热轧工艺合成。复合材料由tc18粗晶区（CGZ）和（TiC+α”）增强tc4细晶区（FGZ）组成。它们具有优异的高强度和高延展性，优于TC4合金和均质Cu@CNTs/TC4复合材料。TC4-FGZ/TC18-CGZ的非均相界面组织对强化增韧效果起重要作用。TC18-CG和TC4-FG之间的晶粒协调变形也是获得优异延性的关键原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Letters Materials Science-General Materials Science

CiteScore

12.10

自引率

3.60%

发文量

审稿时长

3.3 months

期刊介绍： Materials Research Letters is a high impact, open access journal that focuses on the engineering and technology of materials, materials physics and chemistry, and novel and emergent materials. It supports the materials research community by publishing original and compelling research work. The journal provides fast communications on cutting-edge materials research findings, with a primary focus on advanced metallic materials and physical metallurgy. It also considers other materials such as intermetallics, ceramics, and nanocomposites. Materials Research Letters publishes papers with significant breakthroughs in materials science, including research on unprecedented mechanical and functional properties, mechanisms for processing and formation of novel microstructures (including nanostructures, heterostructures, and hierarchical structures), and the mechanisms, physics, and chemistry responsible for the observed mechanical and functional behaviors of advanced materials. The journal accepts original research articles, original letters, perspective pieces presenting provocative and visionary opinions and views, and brief overviews of critical issues.