The calculated Al-Li-Mg-Si phase diagram was used to investigate the equilibrium phase distribution as a function of temperature for the Li-contained 6000 series alloys. Some selected sections through the diagram were presented with a brief explanation.R.Chen...
Precipitation-hardened aluminium alloys typically obtain their strength by forming second-phase particles, which, however, often have a negative effect on formability. To enable both lightweight construction and forming of complex parts such as body pane
The primary α-Al phase was associated with the eutectic microstructure. Fe-rich intermetallic compounds were observed in the eutectic areas. In order to simplifying the explanation, the solidification in the shot sleeve is described as first solidification and the solidification in the die cavity is...
The microstructures primarily consisted of an Al-rich phase, Zn/Al/MgZn2 or Zn/Al/MgZn11 ternary eutectics, and primary MgZn2 phase. However, unfortunately, there was no clear judgment or explanation of the formation law of the Mg2Zn11 and MgZn2 phases. Based on the above research ...
It was confirmed by X-ray diffraction plots that there were Al3Ti and TiB2 phases present, which function as potential nucleants for the nucleation of the main phase. Regarding an explanation of the improvement in the grain refinement of aluminium alloys caused by the addition of the Al-0.5...
Increasing the Sb additions in the ZMA alloy leads to a wider solidification temperature range, increasing the liquidus due to a shift away from the eutectic composition towards the Zn-rich part of the phase diagram. This is caused by the rise in proportion of Mg3Sb2, thereby reducing the amo...
In other words, the GPB zones would assumed to be first formed at a lower temperature and/or shorter holding time, after which the S phase was formed soon. And the separated temperature or holding time could be determined according to Δρ evolution. Detailed explanation of such simplification...
explanation was offered for this phenomenon. In Refs. [26,27], we explained the extremely high plasticity in the Al-based alloys by the presence of thin liquid-like layers of the thermodynamically stable GB phase close to the bulk solidus line. Is it possible to explain the high plasticity ...
The calculated Al-Li-Mg-Si phase diagram was used to investigate the equilibrium phase distribution as a function of temperature for the Li-contained 6000 series alloys. Some selected sections through the diagram were presented with a brief explanation.R.Chen...
An explanation that accounts for both the increased yield stress and the extended Stage I region is the nucleation of second phases on the dislocations generated during the pre-straining. Download: Download high-res image (1MB) Download: Download full-size image Fig. 12. Typical tensile flow ...