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Patent Searching and Data


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.

Inventors:
LIU ZUMING (CN)
PENG KAI (CN)
LV XUEQIAN (CN)
ZHAO FAN (CN)
LI QUAN (CN)
WEI BING (CN)
Application Number:
CN2018/103322
Publication Date:
January 30, 2020
Filing Date:
August 30, 2018
Export Citation:
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Assignee:
UNIV CENTRAL SOUTH (CN)
International Classes:
B22F3/105; B22F3/24; B33Y10/00; B33Y50/02
Foreign References:
CN107790720A2018-03-13
CN106825568A2017-06-13
FR3030321A12016-06-24
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY (CN)
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