摘要
激光粉末床熔融(L-PBF)技术在制备结构复杂合金上具有独特优势。研究了经热处理工艺改善的L-PBF成形GH3536合金的组织特征和855℃下的高温低周疲劳行为,揭示了热处理工艺对组织结构和疲劳性能的影响。结合多种疲劳寿命预测模型分析,深入探讨了L-PBF成形GH3536合金在不同应变幅下的疲劳损伤行为,对增材制造试样高温低周疲劳寿命预测和增材制造零部件的应用具有重要意义。
Laser powder-bed fusion(L-PBF)technology possessesunique advantages in building complex-shape alloys.The microstructure and high temperature low-cycle fatigue behavior of L-PBFed GH3536 superalloy at855℃were investigated,and the influence of heat treatment on microstructure and fatigue performancewas revealed.By combining different fatigue life prediction models,the fatigue damage behavior of L-PBFed GH3536 superalloy atvarious strain amplitudes was discussed.These results are important for high temperature low-cycle fatigue life prediction and application of additive manufactured metal part.
作者
倪浩涵
曾琦
张恺
田艳中
王江伟
Ni Haohan;Zeng Qi;Zhang Kai;Tian Yanzhong;Wang Jiangwei(State Key Laboratory of Silicon Materials,Center of Electron Microscopy,School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China;School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China;AECC Hunan Aviation Plant Research Institute,Zhuzhou 412002,China;School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2023年第6期2302-2308,共7页
Rare Metal Materials and Engineering
基金
国家自然科学基金(52071284)
中国航空发动机集团(HFZL2019CXY001)。
关键词
增材制造
高温合金
疲劳损伤
寿命预测
additive manufacturing
superalloy
fatigue damage
life prediction
