对6061铝合金坯料进行固溶淬火处理，固溶热处理制度为550 ℃/30 min，将淬火后合金在140 ℃下人工时效6~18 h，得到预强化（pre-hardening， PH）坯料。通过室温杯突实验与室温单轴拉伸实验评估6061铝合金预强化坯料的成形性能与力学性能，并进行帽形梁零件冲压试制实验，以验证该技术在工程应用中的可行性。结果表明：PH-12 h预强化铝合金坯料的屈服强度比O态铝合金坯料高186 MPa，抗拉强度比O态高215 MPa，而伸长率和杯突值与O态相近。PH-18 h预强化铝合金经10%变形后最高抗拉强度可达391 MPa，远高于T6态铝合金，说明预强化铝合金坯料兼具良好的强塑性。此外，使用预强化坯料成形的帽形梁零件的抗拉强度和屈服强度均高于T6态铝合金。

The 6061 aluminum alloy billets are subjected to solution quenching treatment under a solution heat treatment condition of 550 ℃ for 30 min. After quenching， the billets are artificially aged at 140 ℃ for 6 h to 18 h to obtain pre-hardening （PH） billets. The formability and mechanical properties of the pre-hardening 6061 aluminum alloy billets are evaluated using room-temperature Erichsen cupping tests and uniaxial tensile tests. Additionally， the stamping trials for hat-shaped beam components are conducted to verify the feasibility of this technique for engineering applications. The results show that the yield strength （YS） of the PH-12 h pre-hardening billets is 186 MPa higher than that of the O-temper billets， and the tensile strength （TS） is 215 MPa higher than that of the O-temper billets， while the elongation （EL） and cupping values are comparable to those of the O-temper billets. The PH-18 h pre-hardening billets exhibit a maximum tensile strength of 391 MPa after 10% deformation， significantly exceeding that of the T6-temper aluminum alloy， demonstrating that the pre-hardening billets possess excellent strength-ductility balance. Furthermore， the hat-shaped beam components formed from pre-hardening billets exhibit tensile and yield strengths superior to those of the T6-temper aluminum alloy.