公开(公告)号：US20240287653A1

公开(公告)日：2024-08-29

申请号：US18576693

申请日：2021-08-23

Applicant: NINGBOSHINTAI MICHINES CO., LTD.

Inventor： Haichun JIANG ,  Qingrong RAN ,  Yuling SUN ,  Canwei LIU ,  Chunming GU ,  Zhengcheng SONG ,  Jiaming JING

IPC: C22C21/02 ,  C22F1/043 ,  C22F1/05

CPC classification number: C22C21/02 ,  C22F1/043 ,  C22F1/05

Abstract: The present disclosure belongs to the technical field of aluminum alloy materials, and in particular relates to a high-strength and high-toughness impact-resistant energy-absorbing Al—Mg—Si alloy. The Al—Mg—Si alloy of the present disclosure comprises Mg 0.40-1.00%, Si 0.50-0.90%, Mn≤0.60%, Cr≤0.30%, Fe≤0.25%, Al 96.8-99.1% in percentage by mass, wherein Sifree=Si—0.3×(Mn+Fe+Cr), a mass ratio of Mg/Sifree is 0.72-1.40, and a percentage by mass of Mg+2Sifree is 1.40%-2.40%. The aluminum alloy not only has excellent conventional mechanical properties, but also has good bending toughness and outstanding crushing and impact-resistant energy-absorbing properties.