Title:
HEAT TREATMENT STRENGTHENING PROCESS FOR ALUMINUM AND MAGNESIUM AS-CAST ALLOY AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/160457
Kind Code:
A1
Abstract:
A heat treatment strengthening process for an aluminum and magnesium as-cast alloy and an application thereof. The aluminum alloy and the magnesium alloy are subjected to multi-process combined treatment such as primary ultralow-temperature treatment, warm isostatic pressing solution treatment, secondary ultralow-temperature treatment, and aging treatment; casting defects such as air holes and shrinkage porosity in an aluminum alloy structure are greatly reduced, residual stress and precipitation strengthening phase distribution is more dispersed, and the aging strengthening effect is more ideal, the strength and elongation of the aluminum and magnesium as-cast alloy are obviously improved. The process steps are simple, the process parameters of warm isostatic pressing and ultralow-temperature treatment can be adjusted according to different as-cast alloy types, the problems of air holes, shrinkage porosity, residual stress and the like in the casting process of the as-cast alloy are effectively solved, and the microstructure and mechanical properties of the aluminum and magnesium as-cast alloy are greatly improved. Moreover, the process steps are simple, the process parameters of warm isostatic pressing and ultralow-temperature treatment can be adjusted according to different as-cast alloy types, the problems of air holes, shrinkage porosity, residual stress and the like in the casting process of the as-cast alloy are effectively solved, and the microstructure and mechanical properties of the aluminum and magnesium as-cast alloy are greatly improved. The heat treatment strengthening process has important significance for expanding the engineering application of the aluminum and magnesium as-cast alloy.
Inventors:
LIU HONGTAO (CN)
QI ZHIFENG (CN)
CHAO YANJI (CN)
ZHOU JIXUE (CN)
LI TAO (CN)
LIU YUNTENG (CN)
YANG HUABING (CN)
WU JIANHUA (CN)
WANG NANA (CN)
LI HANG (CN)
MA BAICHANG (CN)
WANG XITAO (CN)
QI ZHIFENG (CN)
CHAO YANJI (CN)
ZHOU JIXUE (CN)
LI TAO (CN)
LIU YUNTENG (CN)
YANG HUABING (CN)
WU JIANHUA (CN)
WANG NANA (CN)
LI HANG (CN)
MA BAICHANG (CN)
WANG XITAO (CN)
Application Number:
PCT/CN2021/084380
Publication Date:
August 04, 2022
Filing Date:
March 31, 2021
Export Citation:
Assignee:
ADVANCED MAT INSTITUTE SHANDONG ACADEMY OF SCIENCES (CN)
International Classes:
C22F1/04; C22F1/06
Foreign References:
| CN109252074A | 2019-01-22 | |||
| CN109022974A | 2018-12-18 | |||
| CN108796313A | 2018-11-13 | |||
| EP2581466B1 | 2015-04-01 |
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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