Published Online:August 2026
Product Name:The IUP Journal of Mechanical Engineering
Product Type:Article
Product Code:IJME020726
DOI:10.71329/IUPJMECH/2026.19.3.19-30
Author Name:C Jai Shiva Rao and K Prasanna Lakshmi
Availability:YES
Subject/Domain:Engineering
Download Format:PDF
Pages:19-30
Magnesium alloys are attractive due to their lower density, better specific stiffness, and strength; however, formability is reduced by secondary phase strengthening and the absence of slip mechanisms, especially for stronger magnesium alloys like AZ31. The paper examines formability and thinning of cup-shaped deep drawing of AZ31 magnesium alloy at elevated temperatures. AZ31’s enhanced plastic flowability leads the sheet’s depth of forming to increase considerably to 22 mm when the temperature is raised from 250 °C to 350 °C, according to experiments looking at the formability of AZ31 sheets in annealed condition. There was more thinning at 350 °C. The microstructural evolution shows that twinning greatly permits plastic deformation of AZ31 magnesium alloy at elevated temperatures. This heating-induced twinning deformation method improves forming characteristics by overcoming the difficulties of the reinforcing phases. A rise in the deep drawing temperature activates several slip systems and results in a uniform distribution of softened second phase, which reduces resistance to dislocation movement and increases the difficulty of fracture propagation between matrix and second phase. The preferred alignment of crystallographic planes along the deep drawing direction is responsible for the improvement in the mechanical characteristics of the deep drawn part.
Metalworking is one of the most crucial processes for shaping materials, aside from machining, metal joining, powder metallurgy, and metal casting. Shaping materials, on the other hand, may be regarded as the first metalworking, originating from the basic hammering of copper and gold (Khoirudin et al., 2021).