期刊论文

Xingwang Bai

英文

Materials Letters

0167-577X

2023

330

133365

10.1016/j.matlet.2022.133365

In the present work, FSP was employed as post-treatment to WAAM deposited 6061 aluminum alloy. Microstructural observations and mechanical testes were conducted to determine the effects of FSP. The results show that FSP has significant effects of porosity reduction and grain refinement. After FSP, the average grain size in the stirred area reached to about 5 µm, the average microhardness was increased by 31.5 %, the UTS was increased by 6.0 %, and the YS was increased by 23.3 %. The elongation

本校为第一机构

Microstructure refinement and mechanical properties enhancement were achieved by utilizing friction stir processing (FSP) as post-treatment to 6061 aluminum alloy fabricated by wire and arc additive manufacturing (WAAM). FSP led to a significant microstructure refinement and porosity reduction. The average grain size decreased from approximately 128 mu m to about 5 mu m. Because of the refined microstructure and the reduced porosity, the average microhardness, yield strength, and ultimate tensile strength increased by 31.5 %, 23.3 % and 6.0 %, respectively. The elongation difference between th...