Compressive properties, mechanical anisotropy and hardness analysis of Mg–Zn alloy under cross pre-compression

Long, Jianyu; Nazeer, Faisal; Yang, Zhe; Li, Chuan

doi:10.1007/s43452-021-00308-1

Cited by 1 publication

(1 citation statement)

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“…In our previous review article [14], it was summarized that the pre-strain level increased the yield strength (YS) of the Mg alloys; therefore, the strain up to 0.1 led to a remarkable increase in the YS of the ZK-based Mg alloy. The texture -c axes ND ⊥ and the loading along with the ND led to the sigmoidal shape curve, which is the signature of twinning-induced deformation; however, the sigmoidal shape curve correlates with the twinning and de-twinning phenomenon [35,[38][39][40][41]. In addition, twinning boundaries subdivide the parent grains into the number of grains, especially in an multi-variant extension twinning alloy, which can also facilitate the increase in the compressive yield strength (CYS) [14].…”

Section: Proposed Solution and Anticipated Deformation Mechanismmentioning

confidence: 99%

A Prospective Way to Achieve Ballistic Impact Resistance of Lightweight Magnesium Alloys

Malik

Nazeer

Wang

2022

Metals

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The ballistic impact resistance of lightweight magnesium alloys is an eye-catching material for the military and aerospace industries, which can decrease the cost of a project and the fuel consumption. The shockwave mitigation ability of a magnesium alloy is 100 times stronger than an aluminum alloy; nonetheless, ballistic impact resistance has still not been achieved against blunt and API projectiles. The major obstacles are the low hardness, low mechanical strength, basal texture and strain hardening ability under loading along the normal direction of the sheet. The high yield strength and ultimate strength can be achieved for a specific loading condition (tensile or compression) by adjusting the texture in magnesium alloys. The projectile impact along the normal direction in a strong basal-textured magnesium alloy can only produce a slip-induced deformation or minor twinning activity. Here, we propose a practical technique that can be valuable for altering the texture from c-axes//ND to c-axes//ED or TD, and can produce high strain hardening and high strength through a twinning and de-twinning activity. Subsequently, it can improve the ballistic impact resistance of magnesium alloys. The effect of the technique on the evolution of the microstructure and possible anticipated deformation mechanisms after ballistic impact is proposed and discussed.

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