Insights from the MEDE program: An overview of microstructure–property linkages in the dynamic behaviors of magnesium alloys

Wei, Q.; Ramesh, K.T.; Hufnagel, T. C.; Wilkerson, Justin; El‐Awady, Jaafar A.; Kimberley, Jamie; Ravaji, Babak; Joshi, Shailendra P.

doi:10.1016/j.mechmat.2021.104084

Cited by 15 publications

(3 citation statements)

References 208 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, a large research effort has been devoted to developing novel severe plastic deformation processing techniques and new magnesium alloys for use in ballistic and numerous high strain-rate applications. The results derived from these research efforts are promising [47][48][49].…”

Section: Methodsmentioning

confidence: 96%

Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum

Williams

2022

Metals

View full text Add to dashboard Cite

This paper reviews the role of void nucleation, growth, and coalescence on the spall failure process in light metals. Based on the review of the open literature, the preponderance of evidence show that void nucleation, growth, and coalescence are prevalent in light metals such as HCP magnesium and FCC aluminum alloys. The as-received microstructure and its evolution play a crucial role on how voids nucleate, grow, and coalesce. Nucleation of voids in these light metals and metallic alloys can be either homogeneous and heterogeneous but at high enough stresses, both homogeneous and heterogeneous nucleation can be activated simultaneously. Secondary phase particles and intermetallics can strongly influence spall failure, through matrix-precipitate/intermetallic debonding or precipitate/intermetallic cracking during shock compression. Studying spall failure through modeling has proven to be an invaluable tool in developing a fundamental understanding of void nucleation, growth, coalescence, and consequent spall failure. However, since new alloys are currently been developed, more experimental and modeling research are needed to further understand how spall failure initiate and grow in these new alloys.

show abstract

Section: Methodsmentioning

confidence: 96%

Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum

Williams

2022

Metals

View full text Add to dashboard Cite

show abstract

“…The assessment and design of armor plates for protecting humans and vehicles against high-speed impact has long been of interest in military and aerospace applications. Among a large number of protection materials, magnesium (Mg) and its alloys have gained much attention, due to their high strength-to-weight ratio and potential of further improvements in material properties such as strength and ductility [ 1 , 2 , 3 ]. The density of Mg is approximately 35% lower than that of aluminum and approximately 77% lower than that of steel.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty Quantification of Material Properties in Ballistic Impact of Magnesium Alloys

Sun

2022

Materials

View full text Add to dashboard Cite

The design and development of cutting-edge light materials for extreme conditions including high-speed impact remains a continuing and significant challenge in spite of steady advances. Magnesium (Mg) and its alloys have gained much attention, due to their high strength-to-weight ratio and potential of further improvements in material properties such as strength and ductility. In this paper, a recently developed computational framework is adopted to quantify the effects of material uncertainties on the ballistic performance of Mg alloys. The framework is able to determine the largest deviation in the performance measure resulting from a finite variation in the corresponding material properties. It can also provide rigorous upper bounds on the probability of failure using known information about uncertainties and the system, and then conservative safety design and certification can be achieved. This work specifically focuses on AZ31B Mg alloys, and it is assumed that the material is well-characterized by the Johnson–Cook constitutive and failure models, but the model parameters are uncertain. The ordering of uncertainty contributions for model parameters and the corresponding behavior regimes where those parameters play a crucial role are determined. Finally, it is shown that how this ordering provides insight on the improvement of ballistic performance and the development of new material models for Mg alloys.

show abstract

“…The assessment and design of armor plates for protecting humans and vehicles against highspeed impact has long been of interest in military and aerospace applications. Among a large number of protection materials, magnesium (Mg) and its alloys have gained much attention, due to their high strength-to-weight ratio and potential of further improvements in material properties such as strength and ductility [1,2,3]. The density of Mg is approximately 35% lower than that of aluminum and approximately 77% lower than that of steel.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty Quantification of Material Properties in Ballistic Impact of Magnesium Alloys

Sun¹

2022

Preprint

View full text Add to dashboard Cite

The design and development of cutting-edge light materials for extreme conditions including high-speed impact remains a continuing and significant challenge in spite of steady advances. Magnesium (Mg) and its alloys have gained much attention, due to their high strength-to-weight ratio and potential of further improvements in material properties such as strength and ductility. In this paper, we adopt a recently developed computational framework to quantify the effects of material uncertainties on the ballistic performance of Mg alloys. The framework is able to determine the largest deviation in the performance measure resulting from a finite variation in the corresponding material properties. It can also provide rigorous upper bounds on the probability of failure using known information about uncertainties and the system, and then conservative safety design and certification can be achieved. We specifically focus on AZ31B Mg alloys, and assume that the material is well-characterized by the Johnson-Cook constitutive and failure models, but the model parameters are uncertain. We determine the ordering of uncertainty contributions for model parameters and the corresponding behavior regimes where those parameters play a crucial role. Finally, we show that how this ordering provides insight on the improvement of ballistic performance and the development of new material models for Mg alloys.

show abstract

Insights from the MEDE program: An overview of microstructure–property linkages in the dynamic behaviors of magnesium alloys

Cited by 15 publications

References 208 publications

Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum

Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum

Uncertainty Quantification of Material Properties in Ballistic Impact of Magnesium Alloys

Uncertainty Quantification of Material Properties in Ballistic Impact of Magnesium Alloys

Contact Info

Product

Resources

About