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对AZ61镁合金进行了搅拌摩擦加工(FSP),利用拉伸实验机,在室温下对FSP试样进行了拉伸实验。研究表明,对4道次FSP试样实施3%的压缩变形,可显著提高AZ61镁合金的室温力学性能。对于平行于FSP进给方向截取的试样,4道次FSP可将极限抗拉强度从母材的190 MPa提升到327 MPa,伸长率也从母材的13%提高到了18%,屈服应力提升不明显;对于垂直于FSP进给方向截取的试样,4道次FSP可有效提升AZ61镁合金的极限抗拉强度;沿着搅拌头轴线方向对FSP试样施加3%的压缩变形,可分别将材料的屈服应力和极限抗拉强度由母材的140 MPa和190 MPa提升至178 MPa和362 MPa。
The friction stir processing (FSP) of AZ61 magnesium alloy was carried out. The tensile test was carried out on the FSP specimen by tensile test machine. The results show that 3% compression deformation of 4-pass FSP can significantly improve the room temperature mechanical properties of AZ61 magnesium alloy. For samples taken parallel to the FSP feed direction, 4 pass FSPs increased the ultimate tensile strength from 190 MPa for base metal to 327 MPa and the elongation increased from 13% for base metal to 18% for yield stress 4 times FSP can effectively improve the ultimate tensile strength of AZ61 magnesium alloy; 3% of the compression deformation of the FSP specimen along the axial direction of the stirring head can be The yield stress and ultimate tensile strength of the material were raised from 140 MPa and 190 MPa to 178 MPa and 362 MPa respectively.