View in EDS

Investigation on the Microstructure and Properties of AZ31B Alloy with Trace Zr, Ca and Sr Addition.

Saved in:
Bibliographic Details
Title: Investigation on the Microstructure and Properties of AZ31B Alloy with Trace Zr, Ca and Sr Addition.
Authors: Jiao, Jiang1 (AUTHOR) 75681825@qq.com, Lei, Zhang1 (AUTHOR)
Source: Journal of Materials Engineering & Performance. Sep2026, Vol. 35 Issue 35, p37013-37023. 11p.
Subjects: Microstructure, Dislocation structure, Magnesium alloys, Heat treatment, Mechanical behavior of materials, Calcium, Alloys
Abstract: In this work, the microstructure and properties of as-cast and solution-treated AZ31B alloys alloyed with trace Zr, Ca and Sr elements were investigated, and the effects of trace Zr, Ca and Sr on the microstructure and mechanical properties of AZ31B alloy were analyzed. Multi-scale characterization methods including transmission electron microscopy (TEM) were adopted to characterize and analyze the microstructures of the alloy under as-cast and solution-treated states. The solution-treated microstructure consists of α-Mg matrix and a small amount of residual granular compounds. After solution treatment at 480 °C for 4 h, only the single α-Mg phase is observed in the microstructure. Room-temperature tensile property tests were carried out by using a universal mechanical testing machine. The results reveal that both the yield strength and elongation of the alloy are improved after solution treatment in comparison with the as-cast counterpart. The alloy achieves the optimal strength-ductility balance after solution treatment at 480 °C for 4 h, with a yield strength of 182 MPa and an elongation of 20.3%. TEM observations show that a large number of cell structures formed by entangled dislocations exist in the microstructure. Such structures can act as dislocation sources to continuously proliferate dislocations, thereby promoting the subsequent plastic deformation of the alloy. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:In this work, the microstructure and properties of as-cast and solution-treated AZ31B alloys alloyed with trace Zr, Ca and Sr elements were investigated, and the effects of trace Zr, Ca and Sr on the microstructure and mechanical properties of AZ31B alloy were analyzed. Multi-scale characterization methods including transmission electron microscopy (TEM) were adopted to characterize and analyze the microstructures of the alloy under as-cast and solution-treated states. The solution-treated microstructure consists of α-Mg matrix and a small amount of residual granular compounds. After solution treatment at 480 °C for 4 h, only the single α-Mg phase is observed in the microstructure. Room-temperature tensile property tests were carried out by using a universal mechanical testing machine. The results reveal that both the yield strength and elongation of the alloy are improved after solution treatment in comparison with the as-cast counterpart. The alloy achieves the optimal strength-ductility balance after solution treatment at 480 °C for 4 h, with a yield strength of 182 MPa and an elongation of 20.3%. TEM observations show that a large number of cell structures formed by entangled dislocations exist in the microstructure. Such structures can act as dislocation sources to continuously proliferate dislocations, thereby promoting the subsequent plastic deformation of the alloy. [ABSTRACT FROM AUTHOR]
ISSN:10599495
DOI:10.1007/s11665-026-14456-z