Topic
Friction stir processing
About: Friction stir processing is a research topic. Over the lifetime, 2977 publications have been published within this topic receiving 62158 citations.
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TL;DR: In this paper, the microstructure, tensile properties and corrosion behavior of friction stir processed Mg-9Li-1Zn alloy were investigated, and the results showed that the initial elongated grains of the α-Mg and β-Li phases to refined equiaxed grains after friction stir processing.
47 citations
TL;DR: In this article, the microstructure evolution, texture modification, mechanical enhancement, as well as subsequent aging performance for both cast and quenched conditions were studied for both of the two conditions.
47 citations
TL;DR: In this article, the authors focused on the poor wear resistance of the AZ31 magnesium alloy and improving its tribological applications by adding nano-sized ZrO2 nanoparticles and increasing in FSP pass number.
47 citations
TL;DR: In this paper, a fine-grained structure with a grain size of ∼2.4μm was developed in the FSP sample, which was attributed to the high temperature severe plastic deformation generated by FSP.
47 citations
TL;DR: Friction stir processing (FSP) is used locally to modify the microstructure and thus mechanical properties of 5083-H321/5356 aluminum gas metal arc welds (GMAWs) as discussed by the authors.
Abstract: Friction stir processing (FSP) is used locally to modify the microstructure and thus mechanical properties of 5083-H321/5356 aluminum gas metal arc welds (GMAWs). Four specimen approaches were examined: as-arc welded, weld toe FSP (with arc weld on either the advancing or the retreating side of tool), and weld crown FSP. Microstructures within the fine-grained FSP region contained smaller constituent particles. Mg2Si and Al6(Fe,Mn), than those particles found in the arc weld nugget, heat-affected zone (HAZ), and base-metal (BM) locations. The FSP improved the monotonic tensile strength, yield strength, and elongation of 5083-H321/5356 Al arc welds by 6 to 9 pct, 7 to 13 pct, and 46 to 80 pct, respectively. The addition of FSP produced a 30 pct increase in the load necessary to reach 107 cycles during four-point bending fatigue. An analysis of strengthening mechanisms determined that solid-solution, grain-size, and precipitation strengthening made contributions to the calculated yield strength of the BM, are weld nugget, and FSP regions. In addition, the strength mechanism analysis demonstrated that FSP increased the amount of grain-size strengthening and precipitate strengthening by nearly 110 MPa, when compared to the arc weld nugget.
47 citations