✦ LIBER ✦

Deformation mechanisms in an AZ31 cast magnesium alloy as investigated by the acoustic emission technique

✍ Scribed by Enrique Meza-García; Patrik Dobroň; Jan Bohlen; Dietmar Letzig; František Chmelík; Pavel Lukáč; Karl Ulrich Kainer

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 882 KB
Volume: 462
Category: Article
ISSN: 0921-5093
DOI: 10.1016/j.msea.2006.02.469

No coin nor oath required. For personal study only.

✦ Synopsis

Cast AZ31 magnesium alloy was deformed in tension and compression at temperatures between 25 and 350 • C and at a constant strain rate of 10 -3 s -1 . Measurements of the acoustic emission (AE) during testing are presented and related to the microstructure of the sample material. The AE count rates increase with increasing temperature from room temperature to a maximum at 230 • C. At higher temperatures they decrease. This behaviour is discussed with a view to the role of twinning during deformation at elevated temperature.

📜 SIMILAR VOLUMES

Mechanisms of plastic deformation in AZ3

Mechanisms of plastic deformation in AZ31 magnesium alloy investigated by acoustic emission and transmission electron microscopy

✍ Miloš Janeček; Robert Král; Patrik Dobroň; František Chmelík; Vladimír Šupík; Fr 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 522 KB

The effect of deformation conditions on plastic deformation and acoustic emission (AE) in hot-rolled magnesium alloy AZ31 has been investigated in the temperature range of 20-200 • C by constant strain rate tensile tests. Two sets of samples differing in the preheating temperature before individual

The Effect of Grain Size on the Deformat

The Effect of Grain Size on the Deformation Behaviour of Magnesium Alloys Investigated by the Acoustic Emission Technique

✍ J. Bohlen; P. Dobron; E. Meza Garcia; F. Chmelík; P. Lukáč; D. Letzig; K. U. Kai 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 707 KB

Extruded round bars from magnesium alloys ZM21, ZK30, ZE10 and ZEK100 with various grain sizes were tested in tension and compression. The effect of grain size on the deformation behaviour of the alloys was investigated through the Hall‐Petch relation. __In‐situ__ acoustic emission measurements were

Cover Picture: The Effect of Grain Size

Cover Picture: The Effect of Grain Size on the Deformation Behaviour of Magnesium Alloys Investigated by the Acoustic Emission Technique (Adv. Eng. Mater. 5/2006)

✍ J. Bohlen; P. Dobron; E. Meza Garcia; F. Chmelík; P. Lukáč; D. Letzig; K. U. Kai 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 389 KB

## Abstract The cover shows Micrographs from longitudinal sections of extruded bars of ZEK100, extrusion direction horizontal. More information can be found in the paper by J. Bohlen et al. on page 422 in this issue.