Effect of temperature, strain rate and fibre orientation on the plastic flow behaviour and formability of AZ31 magnesium alloy

Bruni, C.; Forcellese, Archimede; Gabrielli, F.; Simoncini, Michela

doi:10.1016/j.jmatprotec.2010.03.025

Cited by 73 publications

(32 citation statements)

References 14 publications

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“…The corresponding ln(Z) are 1.14 and 1.26 as shown in Figure 6. The forming limit curves determined by using Z-FLS and shown by the solid lines match well with the distribution of experimental data [17,19]. (a) ( b) Figure 6.…”

Section: Construction Of Z-fls For Az31 Magnesium Alloysupporting

confidence: 76%

“…It represents the combined effect of temperature and strain rate. The use of Equations (6) and (7) to construct of Z-FLS was validated by determining FLCs from the constructed Z-FLS and comparing them with the experimental FLCs reported by Bruni et al [17] and Hsu et al [19] by using Nakajima dome tests. The experiments were conducted at 300 °C and two different strain rates, namely 0.001 s −1 and 0.01 s −1 .…”

Section: Construction Of Z-fls For Az31 Magnesium Alloymentioning

confidence: 99%

“…(a) ( b) Figure 6. FLCs constructed using the Z-FLS in Figure 5 and compared with data reported in [17,19].…”

Section: Construction Of Z-fls For Az31 Magnesium Alloymentioning

confidence: 99%

“…In various studies on formability of magnesium alloys in warm forming conditions, it is observed that the levels of FLCs increase with increasing temperature, but decrease with increasing strain rate [5,7,11,[16][17][18][19]. Due to variation in tooling speed and heat transfer between the sheet and the tool, warm forming is, in general a non-isothermal process, which creates spatially and temporally different distribution of strain rates and temperatures on the sheet during the forming operation [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Developing a Zener–Hollomon Based Forming Limit Surface for Warm Sheet Forming of Magnesium Alloy

Sheng¹,

Mallick

2018

JMMP

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Abstract:The concept of Zener-Hollomon (Z) based Forming Limit Surface (Z-FLS)-which has minor strain, major strain, and ln(Z) as its three axes-was initially proposed in a previous study. In the Z-FLS diagram, strain rate and temperature effects on the major limit strain are reflected by ln(Z). In the current study, the concept of Z-FLS is revisited to provide a practical approach to construct Z-FLS. A Z-FLS then is constructed for magnesium alloy AZ31B sheet material using available experimental forming limit curves. The constructed Z-FLS is used to identify fracture in a non-isothermal warm cup forming process, which was modeled as a coupled thermo-mechanical process. Based on the Z-FLS, the determined limiting draw ratio (LDR) matches well with the published experimental results.

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Section: Construction Of Z-fls For Az31 Magnesium Alloysupporting

confidence: 76%

Section: Construction Of Z-fls For Az31 Magnesium Alloymentioning

confidence: 99%

“…(a) ( b) Figure 6. FLCs constructed using the Z-FLS in Figure 5 and compared with data reported in [17,19].…”

Section: Construction Of Z-fls For Az31 Magnesium Alloymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Developing a Zener–Hollomon Based Forming Limit Surface for Warm Sheet Forming of Magnesium Alloy

Sheng¹,

Mallick

2018

JMMP

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“…In warm forming, a small punch radius causes defects such as deflection of the sheet towards inner side during V-bending. The strain rate and temperature [5][6][7] affect the elongation and bending mechanism of the magnesium alloy sheet. In this study, we analyzed the bending deformation characteristics of the magnesium alloy sheet for temperature and punch radius.…”

Section: Introductionmentioning

confidence: 99%