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数据驱动的镍基高温合金多目标优化设计与开发
Data-driven Multi-objective Optimization Design and Development of Ni-base Superalloy
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- DOI:
- 作者:
- 邓钥丹 1 ，胡 旺 2 ，连利仙 1 ，巩秀芳 3 ，刘 颖 1 ，章 语 2 ，王誉程 1
DENG Yuedan1 , HU Wang2 , LIAN Lixian1 , GONG Xiufang3 , LIU Ying1 , ZHANG Yu2 , WANG Yucheng1
- 作者单位:
- 1.四川大学 材料科学与工程学院，四川成都 610065；2.电子科技大学 计算机科学与工程学院，四川成都 611731；3.长 寿命高温材料国家重点实验室，四川德阳 618000
1. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China; 2. School of Computer Science and Engineering, University of Electronic Science and Technology, Chengdu 611731, China; 3. State Key Laboratory for Long-life High Temperature Materials, Deyang 618000, China
- 关键词:
- 镍基高温合金；多目标；机器学习；热处理；微观结构
Ni-base superalloy; multi-objective; machine learning; heat treatment; microstructure
- 摘要:
- 为了研发综合性能优异的新型镍基铸造高温合金，利用机器学习和多目标优化综合策略预测优化合金成
分，设计了兼具高 γ′相体积分数、高 γ′相固溶温度、低 TCP 相含量、高液相线温度和宽热处理窗口等多目标特征的候选
合金。 结果表明，通过在固溶和时效热处理中调控固溶温度和时间，获得了 γ′相体积分数趋近 65%、γ′相固溶温度趋近
1 210 ℃、TCP 相含量趋近 0.01%，以及液相线温度高于 1 300 ℃和热处理区间大于 40 ℃的高温合金，同时满足预期设
计的多个目标和约束，模型预测精度高。与具有优异高温力学性能的典型牌号 K438 相比，具有更高的 γ′相体积分数、γ′
相固溶温度，和良好的高温应用潜力。
In order to develop a new nickel-based cast superalloy with excellent comprehensive performance, the candidate alloys with multi-objective characteristics such as high γ′ phase volume fraction, high γ′ phase solid solution temperature, low TCP phase content, high liquidus temperature and wide heat treatment window were designed by using machine learning and multi-objective optimization strategy. The results show that the volume fraction of γ′ phase tends to 65%, the solution temperature of γ′ phase tends to 1 210 ℃, the content of TCP phase tends to 0.01%, and the liquidus temperature is higher than 1 300 ℃ and the heat treatment interval is greater than 40 ℃ by regulating the solution temperature and time in the solution and aging heat treatment, and the multiple objectives and constraints of the expected design can be met at the same time. The prediction accuracy of the model is high. Compared with the typical brand K438 with excellent mechanical properties at high temperature, it has higher volume fraction of γ′ phase, solution temperature of γ′ phase and good application potential at high temperature.