FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy and may be used in production of sheets from high-strength heat-hardened aluminium alloys alloyed by scandium and zirconium. Proposed method comprises smelting, overheating of aluminium melt containing scandium and zirconium to 750-780°C. Melt is cast at 715-730°C in semi-continuous process to flat ingots to be homogenized at 420-440°C for 4 - 10 h, hot-rolled at 360 - 420°C and cold-rolled with total reduction over 70%. Cold-rolled sheets are quenched and aged.
EFFECT: high strength, ductility and residual strength and lo rate of fatigue crack development.
4 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| HIGH-STRENGTH DEFORMABLE ALLOY BASED ON ALUMINIUM WITH LOWER DENSITY AND METHOD OF ITS PROCESSING | 2011 |
|
RU2468107C1 |
| SUPERPLASTIC ALUMINIUM-BASED ALLOY | 2011 |
|
RU2491365C2 |
| ALLOY OF HIGH STRENGTH BASED ON ALUMINUM | 2018 |
|
RU2738817C2 |
| METHOD TO PRODUCE AXISYMMETRIC FORGINGS OF COVER TYPE WITH DIAMETER UP TO 200 MM FROM HIGH-STRENGTH ALUMINIUM ALLOYS AL - ZN - MG - CU, ALLOYED BY SCANDIUM AND ZIRCONIUM | 2012 |
|
RU2516680C1 |
| METHOD FOR PRODUCTION OF SUPERPLASTIC SHEET FROM ALUMINUM-BASED ALLOY AND PRODUCT MADE FROM THE SAME | 2004 |
|
RU2246555C1 |
| CORROSION-RESISTANT ALUMINUM-BASE ALLOY, METHOD OF PRODUCTION OF SEMIFINISHED PRODUCTS AND ARTICLE FOR THIS ALLOY | 1999 |
|
RU2163938C1 |
| HIGH-STRENGTH ALUMINIUM-BASED ALLOY AND METHOD FOR OBTAINING ITEMS FROM IT | 2010 |
|
RU2443793C1 |
| PLATE FROM HIGH-STRENGTH ALUMINIUM ALLOY AND METHOD OF ITS PRODUCTION | 2014 |
|
RU2569275C1 |
| ALUMINIUM-BASED ALLOY AND PRODUCT MADE THEREFROM | 2020 |
|
RU2771396C1 |
| MODIFYING ALLOYING BAR Al-Sc-Zr | 2012 |
|
RU2497971C1 |
