Research of Mechanical Properties of Ni-Ti-Nb Alloyson Low Temperature and Restriction Behavior

TL;DR

This study investigates the low-temperature mechanical properties of Ni-Ti-Nb alloys subjected to different heat treatments and restriction conditions, revealing that vacuum heat treatment enhances performance and that restriction affects stress behavior.

Contribution

It provides a comparative analysis of mechanical properties of Ni-Ti-Nb alloys under various heat treatments and restriction conditions, highlighting the effects of vacuum heat treatment and restriction on alloy performance.

Findings

Vacuum heat treatment yields superior mechanical properties.

Restricting recover affects stress-strain behavior and yield characteristics.

Stress levels vary between restricting and non-restricting alloys.

Abstract

Mechanical Properties of Ni-Ti-Nb alloys with these conditions of cold-drawing, non-vacuum heat treatment and vacuum heat treatment were measured at low temperature, and Mechanical Properties of Ni47Ti44Nb9 alloys of restricting recover was compared with the one of alloys of non-restricting recover, and these rules of the mechanical performance between them was analyzed. Experiment indicates that, mechanical Properties of vacuum heat treatment's alloys was more excellent than the other two (non-vacuum heat treatment and cold-drawing), and the stress curves of alloys of restricting recover haven't the evident yield band, and the stress of alloys of restricting recover was higher than the ones of alloys of non-restricting recover, but the stress of alloys of restricting recover was lower than the ones of alloys of non-restricting recover.