Work

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

Year: 2024

Type: article

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.

Source: Materials Research Letters

DOI: 10.1080/21663831.2024.2432416

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

Institutions: Lanzhou University, Western Metal Materials (China), Northwest Institute For Non-Ferrous Metal Research, Northumbria University

Language: English

Topic: Titanium Alloys Microstructure and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,459