| Effect of welding speed and post-weld aging on the microstructure and mechanical properties of friction stir welded B4Cp/6061A1-T6 composites | |
| Li, Y. Z.1,4; Zan, Y. N.2,3; Wang, Q. Z.1; Xiao, B. L.2; Ma, Z. Y.2 | |
| Corresponding Author | Wang, Q. Z.(qzhwang@imr.ac.cn) ; Ma, Z. Y.(zyma@imr.ac.cn) |
| 2019-11-01 | |
| Source Publication | JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
 |
| ISSN | 0924-0136 |
| Volume | 273Pages:11 |
| Abstract | 2.9 mm thick 20 wt% B4Cp/6061A1-T6 composite sheets were friction stir welded using a threaded cermet tool at welding speeds of 50-400 mm/min and a tool rotating rate of 1000 rpm and then subjected to post-weld artificial aging. Sound joints were achieved under all welding speeds. The threaded cermet pin only exhibited slight abrasion at the top thread of the screw after all of the welding operations with a total length of 1200 mm. The B4C particles were blunted and fragmented, and uniformly distributed in the nugget zone (NZ), due to the severe material deformation combined with the particle/pin interaction. The fine precipitates in the matrix alloy were mostly dissolved in the NZ but were significantly coarsened in the heat affected zone (HAZ). The joints exhibited significantly decreased tensile strength compared with the base material. The joint strength increased slightly with increasing welding speed, with maximum joint efficiency of similar to 70% at 400 mm/min. Artificial aging resulted in significant improvement in the NZ hardness and joint strength due to the re-precipitation of the precipitates, with a larger increment for the joint under higher welding speed. The joint at 400 mm/min exhibited the highest joint efficiency of similar to 85% after artificial aging. Artificial aging changed the hardness profiles of the NZ from flat to "M" shapes due to the change in quantities of solutes after FSW with increasing distance from the NZ centerline. The fracture of both as-welded and aged joints occurred in the HAZ. |
| Keyword | Metal-matrix composites (MMCs) Friction stir welding Microstructures Mechanical testing Heat treatment |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.jmatprotec.2019.05.023 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[U1508216] ; National Natural Science Foundation of China[51771194] ; National Natural Science Foundation of China[51331008] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000479025200008 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134958 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Q. Z.; Ma, Z. Y. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol China, Shenyang 110016, Liaoning, Peoples R China 4.Lorraine Univ, Inst Jean Lamour, F-54011 Nancy, France |
| Recommended Citation GB/T 7714 | Li, Y. Z.,Zan, Y. N.,Wang, Q. Z.,et al. Effect of welding speed and post-weld aging on the microstructure and mechanical properties of friction stir welded B4Cp/6061A1-T6 composites[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2019,273:11. |
| APA | Li, Y. Z.,Zan, Y. N.,Wang, Q. Z.,Xiao, B. L.,&Ma, Z. Y..(2019).Effect of welding speed and post-weld aging on the microstructure and mechanical properties of friction stir welded B4Cp/6061A1-T6 composites.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,273,11. |
| MLA | Li, Y. Z.,et al."Effect of welding speed and post-weld aging on the microstructure and mechanical properties of friction stir welded B4Cp/6061A1-T6 composites".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 273(2019):11. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment