Microstructure and Mechanical Properties of AA7075 Alloy with Laser High-Temperature Pre-precipitation Process
Journal of Materials Engineering and Performance(2020)
Abstract
The effect of laser high-temperature pre-precipitation on the microstructure and mechanical properties of the AA7075 alloy was studied comprehensively. Laser high-temperature pre-precipitation method was a promising alternative to the traditional high-temperature pre-precipitation method. The microstructure of the alloy was analyzed by transmission electron microscopy. By comparing the results of the hardness, tensile, and wear tests, the best mechanical properties of the alloy were obtained after treated with the 1000 W laser. More meta-stable η′ phases were formed in the matrix, in which the precipitates were dispersed. As for the mechanism, the interaction between dislocations and precipitates in the matrix changed from cutting mechanism to Orowan mechanism.
MoreTranslated text
Key words
AA7075 alloy,laser temperature pre-precipitation,microstructure,mechanical properties
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined