Title:
CAST ALUMINUM ALLOY OF HIGH-STRENGTH HIGH-TOUGHNESS THIN-WALL STRUCTURAL MEMBER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/237837
Kind Code:
A1
Abstract:
The present invention relates to the technical field of aluminum alloy processing, and in particular relates to a cast aluminum alloy of a high-strength high-toughness thin-wall structural member and a preparation method therefor. The aluminum alloy comprises the following components, the content of each component being shown in percentage by weight: 86.98%-96.73% Al, 3.00%-10.00% Si, 0.10%-1.00% Mg, 0.10%-1.00% Mn, 0.01%-0.10% Sr, 0.01%-0.12% B, 0.05%-0.20% Ti, Fe≤ 0.60%; and in percentage by weight, the ratio C1＝B/Sr≥1.00. According to the high-strength high-toughness aluminum alloy in the present invention, Ti and B elements are added to refine α-Al crystal grains on the basis of optimizing the main alloy elements of Si, Mg and Mn, and Sr elements are added to refine the modified eutectic Si phase. In addition, the content of the foregoing elements and impurity elements is controlled, and the elements and the impurity elements match each another, so that the aluminum alloy has high strength, good toughness and an excellent die-casting process performance.
Inventors:
ZHANG YING (CN)
REN HUAIDE (CN)
JING BAIHENG (CN)
LI YUANBIN (CN)
LI KAI (CN)
WANG JICHENG (CN)
LU QIANG (CN)
FENG LI (CN)
CHEN YANLIN (CN)
PENG DIANMING (CN)
REN HUAIDE (CN)
JING BAIHENG (CN)
LI YUANBIN (CN)
LI KAI (CN)
WANG JICHENG (CN)
LU QIANG (CN)
FENG LI (CN)
CHEN YANLIN (CN)
PENG DIANMING (CN)
Application Number:
PCT/CN2019/100504
Publication Date:
December 03, 2020
Filing Date:
August 14, 2019
Export Citation:
Assignee:
ZHUHAI RUNXINGTAI ELECTRICAL CO LTD (CN)
International Classes:
C22C21/04; B22D17/00; C22C1/03; C22F1/047
Foreign References:
| CN102676885A | 2012-09-19 | |||
| CN102676885A | 2012-09-19 | |||
| CN109338180A | 2019-02-15 | |||
| JPS5186011A | 1976-07-28 | |||
| US20050163647A1 | 2005-07-28 |
Attorney, Agent or Firm:
BOXIN CHINA INTELLECTUAL PROPERTY (CN)
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