Experimentally and Numerical Study on Deep Drawing Process for Magnesium Alloy Sheet at Elevated Temperatures

Abstract

Recently, magnesium alloys have been considered as a promising alternative for high-strength steel and aluminum in some applications because of its advantages such as low density, high specific strength etc. However, the application of formed magnesium wrought alloys components is restricted due to lack of knowledge for processing magnesium alloys at elevated temperatures. In this study, the deformation behavior of a cylindrical deep drawing of magnesium alloy sheets at elevated temperatures are simulated by using a non-isothermal finite element based on DEFORM 3D commercial software. In order to validate the finite element analysis, deep drawing test of cylindrical cup of AZ31 and AZ52 rolled sheets at given conditions was also performed. The experimental results show a good agreement with the finite element simulation predictions. The optimal forming temperature, thickness distribution of the cup and punch force were determined for the process.

Effect of process parameters on micro flexible deep drawing of stainless steel 304 cups utilizing floating ring: Simulation and experiments

“…In sheet metal forming, the plane stress conditions are adopted, and consequently only four stress ratios (R 11 , R 22 , R 33 and R 12 ) are taken into account. 16 Within the FE code ABAQUS, the anisotropic yield stress ratios of sheet metals are expressed in terms of plastic strain ratios (width-to-thickness strain ratios) r 0 , r 45 and r 90 along the RD, DD (45°) and TD, respectively, as shown in equation (6). The plastic strain ratios and the anisotropic yield stress ratios required to define the elastic–plastic model are presented in Table 2…”

تحقيق عملي ومحاكاة لعملية سحب عميق مايكروية بأدوات مرنة بأستخدام تقنية الحلق الطافي

“…the factors R11, R22, R33, R12, R13 and R23 are anisotropic yield stress ratios. Due to the stress situation in sheet metal forming processes are characterized by plane stress conditions therefore four anisotropic ratios are considered in this work which are R11, R22, R33 and R12 [14]. In Abaqus software, these factors are expresses using Lankford Factors as r0, r45 and r90 as following equations [15]:…”

Warm negative incremental forming of magnesium alloy AZ31 Sheet: New lubricating method

“…However, the rolled AZ31 alloys offer good mechanical properties with good balance between strength and ductility, and excellent formability at elevated temperature because nonbasal slip systems become active in addition to basal slip such as hot drawing forming (Hai et al, 2008), gas bulging forming (Kim et al, 2008) and warm SPIF process (Ji and Park, 2008;Ambrogio et al, 2008).…”