About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
|
12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
Effects of Pre-straining and Heat Treatment on Room Temperature and Creep Strength in a Long Period Stacking Ordered Type Mg-Zn-Y Alloy |
Author(s) |
Mayumi Suzuki, Tatsuya Yamaguchi, Koji Hagihara |
On-Site Speaker (Planned) |
Mayumi Suzuki |
Abstract Scope |
Long period stacking ordered (LPSO) type magnesium alloys have been investigated by many researchers because of their excellent mechanical properties and unique crystalline structures. In the present investigation, the effects of kink density and subsequent heat treatment have been investigated on compression strength in a directionally solidified (DS) Mg-Y-Zn based LPSO alloys.
Kink boundaries were introduced heterogeneously in DS alloys and many dislocations are introduced within grains after room temperature pre-straining. Both of room temperature compression strength and creep strength increases with increasing the value of the pre-strain. Mechanical properties of pre-strained specimens improved by high temperature heat treatment at 750 K, whereas their strength was decreased by the heat treatment at 650 K. EBSD analysis revealed that some recovery/re-arrangement of kink bands were occurred during heat treatment at 750 K. This microstructural change was affected significantly by both of kink density and subsequent heat treatment conditions. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |