Shearing and shaving of AZ31 magnesium alloy sheets.

Koga, Nobuhiro; Hato, Kazunari; Paisarn, Ratchanee

doi:10.2464/jilm.51.452

Cited by 2 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, Shih et al [3] reported that defects in the blanked edge could lead to premature edge fracture in the subsequent forming processes. Therefore, in order to improve the quality of the sheared edge, the sheared specimen may require additional post-processing steps [4], i.e., deburring [5].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Sheared Edges in Warm Blanking of Magnesium Alloy AZ31B

Fazily

Lee

2019

Materials

View full text Add to dashboard Cite

This research aims to characterize damage at the sheared edge caused by the blanking operation of magnesium alloy AZ31B sheets. Shearing tests were carried out on an in-house blanking die-set and mechanical press (universal testing machine) by varying punch–die clearance and temperature. Edge damage was distinguished by the geometrical features of the sheared edge and by the distribution of the edge strain hardening (ESH) index. In this account, optical microscopy and scanning electron microscopy were applied to examine the characteristic dimensions of the sheared edge, fracture profile, and sheared edge quality, while the Vickers hardness test was applied to observe the surface micro-hardness in the shear zone (SZ) and the shear affected zone (SAZ). It was concluded that the blanking of magnesium alloy sheets at room temperature results in sheared edge defects, due to premature fracture, referred to here as micro-cracks, loose particles, and a jagged-plus-curved fracture profile. However, such deformities were completely suppressed with the rise in temperature. In addition, based on optical morphology, micro-hardness tests, and microstructure evolution, the recommendation regarding blanking temperature for the magnesium alloy AZ31B has was proposed.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of Sheared Edges in Warm Blanking of Magnesium Alloy AZ31B

Fazily

Lee

2019

Materials

View full text Add to dashboard Cite

show abstract

Shearing of light metal sheets using hard-film-coated tools

Paisarn¹,

Hato²,

Koga³

2004

J. Japan Inst. Light Metals

View full text Add to dashboard Cite

In shearing process, such as blanking or piercing on the sheets of both aluminum and magnesium alloys, there are problems that large burrs generate and the accuracy of cut surface is worse after a few repetitions of these processes. Therefore, in this study, we investigated the cause and solution of these problems. We found that the cause was not the deterioration of the tool edge due to wear or chipping, but that materials of the sheared sheets which adhered to the side of the tool shaved the cut surfaces of the sheets during shearing or adhered to the cut surfaces and induced partial plastic deformation. We also found that a hard-carbon-film-coated tool is effective in preventing the generation of adhesive materials, thereby preventing both the generation of large burrs and the decrease in the accuracy of cut surfaces.

show abstract

Shearing and shaving of AZ31 magnesium alloy sheets.

Cited by 2 publications

References 5 publications

Characterization of Sheared Edges in Warm Blanking of Magnesium Alloy AZ31B

Characterization of Sheared Edges in Warm Blanking of Magnesium Alloy AZ31B

Shearing of light metal sheets using hard-film-coated tools

Contact Info

Product

Resources

About