Effect of Process Parameters on Abnormal Grain Growth during Friction Stir Processing of a Cast Al Alloy

Journal Article · Thu Nov 25 00:00:00 EST 2010 · Materials Science and Engineering. A. Structural Materials: Properties, Microstructure and Processing, 528(1):189-199

DOI:https://doi.org/10.1016/j.msea.2010.08.049· OSTI ID:1001104

Jana, Saumyadeep; Mishra, Rajiv S; Baumann, John A; Grant, Glenn J

The effects of process parameters and friction stir processing (FSP) run configurations on the stability of nugget microstructure at elevated temperatures were evaluated. Cast plates of an Al-7Si- 0.6Mg alloy were friction stir processed using a combination of tool rotation rates and tool traverse speeds. All single pass runs showed some extent of abnormal grain growth (AGG), whereas multi-pass runs were more resistant to AGG. Additionally, higher tool rpm was found to be beneficial for controlling AGG. These effects were analyzed by comparing the result of this work with other published results and AGG models.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1001104
• Report Number(s): PNNL-SA-73063; VT0504000; TRN: US201101%%838
• Journal Information: Materials Science and Engineering. A. Structural Materials: Properties, Microstructure and Processing, 528(1):189-199, Vol. 528, Issue 1; ISSN 0921-5093
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
FRICTION
GRAIN GROWTH
MICROSTRUCTURE
PLATES
PROCESSING
ROTATION
STABILITY
Friction Stir Welding
Friction Stir Processing
FSW
abnormal grain growth