A new magnesium sheet alloy with high tensile properties and room-temperature formability

Shi, Renhai; Miao, Jiashi; Avey, Thomas; Luo, Alan A.

doi:10.1038/s41598-020-67161-9

Title: A new magnesium sheet alloy with high tensile properties and room-temperature formability

Journal Article · Mon Jun 22 00:00:00 EDT 2020 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-020-67161-9· OSTI ID:1635152

Shi, Renhai ^[1]; Miao, Jiashi ^[1]; Avey, Thomas ^[1]; Luo, Alan A. ^[1]

The Ohio State Univ., Columbus, OH (United States)

Lightweight sheet alloys with superior mechanical performance such as high strength, ductility and formability at room temperature (RT) are desirable for high volume automotive applications. However, ductility or formability of metallic alloys at RT are generally inversely related to strength, thereby making it difficult to optimize all three simultaneously. Here we design a new magnesium sheet alloy-ZAXME11100 (Mg-1.0Zn-1.0Al-0.5Ca-0.4Mn-0.2Ce, wt. pct.) via CALPHAD (CALculation of PHAse Diagram) modeling and experimental validation. This new sheet alloy offers an excellent RT formability with a high Index Erichsen (I.E.) value of 7.8 mm in a solution-treated condition (T4), due to its weak and split basal texture and fine grain structure. The new ZAXME 11100 alloy also shows a rapid age-hardening response during post-forming artificial aging treatment at 210 °C for 1hour (T6), resulting in a significant increase of yield strength from 159 MPa (T4) to 270 MPa (T6). The excellent combination of T4 ductility (31%), T4 formability (7.8 mm) and T6 yield strength (270 MPa) in this new magnesium alloy is comparable to that of common 6xxx series aluminum sheet alloys. Thus, this new magnesium sheet alloy is highly attractive for sheet applications in automotive and other industries.

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Research Organization:: The Ohio State Univ., Columbus, OH (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)

Contributing Organization:: The Ohio State University

Grant/Contract Number:: EE0007756

OSTI ID:: 1635152

Report Number(s):: DOE-USAMP-07756-06

Journal Information:: Scientific Reports, Vol. 10, Issue 1; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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References (33)

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