In-situ Differential Scanning Calorimetry of Dissolution and Precipitation Behaviour in Mg-Y-Nd Alloy WE43Wednesday (08.11.2017) 11:40 - 12:00 Part of:
speaker: Lydia Burgschat
Lydia Burgschat1,2*, Benjamin Milkereit1,2, Olaf Kessler1, Christoph Schick2
1 University of Rostock, Faculty of Mechanical Engineering and Marine Technology,
Chair of Materials Science, 18051 Rostock, Germany,
2 University of Rostock, Institute of Physics, Polymer Physics Group, 18051 Rostock, Germany
* corresponding author: Lydia Burgschat, tel 0049 381 498 6886; fax 0049 381 498 9472; firstname.lastname@example.org
The precipitation behaviour of magnesium alloys during production processes (e.g. heat treatment) is mostly investigated with ex-situ analysis, like XRD, SEM or TEM. In recent years, our group has developed an in-situ calorimetric method to record the dissolution and precipitation behaviour of aluminium alloys. Continuous heating and cooling transformation diagrams have been established. This method was now transferred to magnesium alloys for the very first time, solving problems like pan material and reference material. The Mg-RE alloy WE43 (T5) was investigated with wide range of heating and cooling rates from 0.01 K/s to 3 K/ and temperatures up to 540 °C. A sequence of several dissolution and precipitation reactions could be observed during heating, whereas at least two precipitation reactions occurred during cooling. Start temperatures and intensities depend on heating resp. cooling rates.