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On The Wear Mechanism And Subsurface Deformation Of Zr-based Metallic Glass At Subzero Temperature.

Home
On The Wear Mechanism And Subsurface Deformation Of Zr-based Metallic Glass At Subzero Temperature.

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On the Wear Mechanism and Subsurface Deformation of Zr-Based Metallic Glass at Subzero Temperature.

Xin Li^1,2,3, Jianan Fu⁴, Zhen Li⁴

¹School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, China.

Materials (Basel, Switzerland)

|July 12, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Metallic glasses exhibit significantly reduced wear rates at subzero temperatures, showing a 60% improvement compared to room temperature. This enhanced wear resistance in cold environments makes them suitable for extreme applications.

Keywords:

metallic glasses subsurface deformation subzero temperature wear mechanism wear properties

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Area of Science:

Materials Science
Tribology
Mechanical Engineering

Background:

Metallic glasses (MGs) possess excellent mechanical properties, making them suitable for advanced technological applications.
Their disordered atomic structure suggests potential for subzero engineering applications.
Limited research exists on the mechanical properties and wear behavior of MGs at subzero temperatures.

Purpose of the Study:

To investigate the wear properties and mechanisms of a Zr-based metallic glass (MG) at a subzero temperature of -50 °C.
To compare the wear performance of MGs in subzero conditions versus room temperature.
To understand the underlying reasons for observed differences in wear behavior.

Main Methods:

Systematic evaluation of wear properties and mechanisms of Zr-based MG.

Testing conducted at a specific subzero temperature (-50 °C) and compared with room temperature data.

Analysis of wear mechanisms, including oxidation, adhesion, and abrasion.

Main Results:

MGs exhibited approximately a 60% reduction in wear rate at -50 °C compared to room temperature.
At room temperature, MGs formed a brittle oxide layer, leading to oxidation, adhesive, and abrasive wear.
At subzero temperatures, only abrasive wear was observed, with a higher elastic modulus contributing to improved wear resistance.

Conclusions:

Zr-based MGs demonstrate superior wear resistance in subzero environments.
The absence of oxide layer formation and increased elastic modulus are key factors for enhanced performance at low temperatures.
Findings offer valuable insights for utilizing MGs in subzero engineering applications like deep space and polar exploration.