Title:
METHOD FOR ELIMINATING CRACKS OF LASER ADDITIVE MANUFACTURING OF HIGH-TEMPERATURE RENÈ 104 NICKEL-BASED ALLOY
Document Type and Number:
WIPO Patent Application WO/2020/019404
Kind Code:
A1
Abstract:
A method for eliminating cracks of laser additive manufacturing of high-temperature Renè 104 nickel-based alloy. For solving the problem that cracks are easily generated during laser additive manufacturing of high-temperature Renè nickel-based alloy with high content of Al and Ti (Al+Ti>5%), generation of large-size cracks inside a formed part is suppressed by means of designing laser forming parameters and a partition scanning strategy; then stress relief annealing is performed to completely eliminate residual stress inside the formed part; and a spark plasma sintering process is performed to eliminate cracks inside the formed part and suppress the growth of grains during the sintering process.
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Inventors:
LIU ZUMING (CN)
PENG KAI (CN)
LV XUEQIAN (CN)
ZHAO FAN (CN)
LI QUAN (CN)
WEI BING (CN)
PENG KAI (CN)
LV XUEQIAN (CN)
ZHAO FAN (CN)
LI QUAN (CN)
WEI BING (CN)
Application Number:
PCT/CN2018/103322
Publication Date:
January 30, 2020
Filing Date:
August 30, 2018
Export Citation:
Assignee:
UNIV CENTRAL SOUTH (CN)
International Classes:
B22F3/105; B22F1/052; B22F3/24; B33Y10/00; B33Y50/02
Foreign References:
| CN107790720A | 2018-03-13 | |||
| CN106825568A | 2017-06-13 | |||
| FR3030321A1 | 2016-06-24 |
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY (CN)
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