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题名: Fabrication of large-bulk ultrafine grained 6061 aluminum alloy by rolling and low-heat-input friction stir welding
作者: Liu, CY;  Qu, B;  Xue, P;  Ma, ZY;  Luo, K;  Ma, MZ;  Liu, RP
发表日期: 2018
摘要: In this study, the ultrafine grained (UFG) 6061 Al alloys fabricated by cold rolling were friction stir welded (FSW) with different rotation rates under both air cooling and rapid cooling in water. Low-heat-input parameters of 400 rpm rotation rate in water (400-Water) could effectively inhibit the coarsening of recrystallized grains, reduce the precipitation rate, and retain more dislocations of the UFG 6061 Al parent metal. 400-Water joint showed high lowest-hardness value, narrow low-hardness zone, and high tensile strength, attributing to the effect of dislocation, grain boundary, solid-solution, and precipitation hardening. This work provides an effective strategy to fabricate large-sized bulk UFG Al alloy by cold rolling with large deformation and low-heat-input FSW. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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Recommended Citation:
Liu, CY,Qu, B,Xue, P,et al. Fabrication Of Large-bulk Ultrafine Grained 6061 Aluminum Alloy By Rolling And Low-heat-input Friction Stir Welding[J]. Journal Of Materials Science & Technology,2018,34(1):112-118.

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