Journal article
Studies of TiB and Ti-TiB Composites at Multiple Scales
Journal of alloys and compounds, Vol.1026, 180441
05/05/2025
DOI: 10.1016/j.jallcom.2025.180441
Abstract
Ti-TiB composites are promising materials for high-performance applications due to their superior mechanical properties, including high strength, stiffness, and wear resistance. Traditionally, TiB properties have been inferred from Ti-TiB composites, as isolated TiB whiskers are difficult to obtain. In this study, we utilize our previously developed molecular dynamics (MD) potential to directly investigate the intrinsic mechanical properties of TiB, offering a novel approach to understanding its behavior at the nanoscale. Our MD simulations reveal that pristine TiBs exhibit high stiffness and brittleness, with their mechanical behaviors significantly affected by vacancy defects and temperature variations. These findings are incorporated into peridynamics (PD) simulations to model the mechanical response of Ti-TiB composites at the microscale. The simulations are validated against reported experimental measurements, demonstrating that increasing the ceramic volume fraction enhances stiffness and strength, while elevated temperatures degrade mechanical performance. Furthermore, these microscale simulations establish a crucial link between nanoscale MD results and macroscale impact modeling. At the macroscale, PD simulations analyze the impact resistance of functionally graded laminates composed of Ti-TiB composites, highlighting the influence of temperature gradients and material distribution on energy absorption. This multi-scale framework provides the first computational approach to accurately modeling TiB properties independent of composite measurements, offering new insights into the design and optimization of Ti-TiB composites for advanced applications.
Details
- Title: Subtitle
- Studies of TiB and Ti-TiB Composites at Multiple Scales
- Creators
- Yingbin ChenAkram GhaffarigharehbaghShaoping Xiao
- Resource Type
- Journal article
- Publication Details
- Journal of alloys and compounds, Vol.1026, 180441
- Publisher
- ELSEVIER SCIENCE SA
- DOI
- 10.1016/j.jallcom.2025.180441
- ISSN
- 0925-8388
- eISSN
- 1873-4669
- Grant note
- National Science Foundation: 2104383 U.S. Department of Education: P116S210005
This material is based upon work supported by the National Science Foundation under Grant Number 2104383 and the U.S. Department of Education under Grant Number ED#P116S210005. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation and the U.S. Department of Education.
- Language
- English
- Electronic publication date
- 04/15/2025
- Date published
- 05/05/2025
- Academic Unit
- Iowa Technology Institute; Mechanical Engineering
- Record Identifier
- 9984811207302771
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