Tohoku University, Japan 7 Moon 21 The Daily reported that a magnesium alloy with shape-memory properties has been successfully developed. This alloy is approximately lighter than the original shape-memory alloy. 70% It holds promise for applications in industrial products that demand lightweight materials, such as aerospace and aviation materials, as well as medical devices like expandable stents.

　　In this study, the researchers focused on adding scandium to magnesium. Mg-Sc After alloying, a body-centered cubic structure can be obtained. (bcc) Based on this key point, we began to explore how to leverage it to enable magnesium alloys to achieve high performance. The research found that... BCC Type Mg-Sc The alloy induces martensitic transformation and exhibits shape-memory properties. ( Superelastic effect ) And the researchers have developed... Mg-20 at% Sc The alloy is in -150 Celsius has already shown at low temperatures 4% The above superelastic deformation.

　　In fields such as rockets and spacecraft, shape-memory alloys are attracting considerable attention for use in components like vibration-absorbing parts and self-deploying supports. Additionally, rockets are being made lighter. 1kg Can reduce launch costs. 6 Over 10,000 yuan—thus, companies in this field are in great need of lightweight rocket materials and components. Moreover, shape-memory magnesium alloys are lighter in mass than previous memory alloys. 70% Moreover, it boasts higher strength and ductility than previous magnesium alloys.

　　In addition, shape-memory magnesium alloys are also highly suitable for use in medical devices such as expandable stents. Superelastic stents are not only soft but also maintain their shape, making them easy to deliver and implant into blood vessels. However, permanent implantation of such stents could potentially lead to restenosis. Since magnesium is biodegradable, researchers are also exploring its potential application in high-performance, biodegradable superelastic magnesium stents.

　　To enable the newly developed alloy to be put into practical use, Tohoku University in Japan plans to conduct relevant evaluations in the future, verifying the effects of optimizing the alloy composition on factors such as the rise in operating temperature and biocompatibility.