基于热力学计算与机器学习的增材制造镍基高温合金裂纹敏感性预测模型

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穆亚航, 张雪, 陈梓名, 孙晓峰, 梁静静, 李金国, 周亦胄

Modeling of Crack Susceptibility of Ni-Based Superalloy for Additive Manufacturing via Thermodynamic Calculation and Machine Learning

MU Yahang, ZHANG Xue, CHEN Ziming, SUN Xiaofeng, LIANG Jingjing, LI Jinguo, ZHOU Yizhou

表2 增材制造镍基高温合金的裂纹敏感性系数^[4,5,18~21]

Table 2 Crack susceptibility criteria of Ni-based superalloys^[4,5,18-21]

Type of crack	Crack susceptibility criteria	Formula	Ref.
Hot-tearing crack	FR	$F R = T_{l} - T_{s}$	[18]
	CSC	$C S C = \frac{t_{V}}{t_{R}} = \frac{t_{f_{s} = 0.99} - t_{f_{s} = 0.90}}{t_{f_{s} = 0.90} - t_{f_{s} = 0.40}}$	[19]
	HSC	$H S C = \frac{T_{V}}{T_{R}} = \frac{T_{f_{s} = 0.99} - T_{f_{s} = 0.90}}{T_{f_{s} = 0.90} - T_{f_{s} = 0.40}}$	[20]
	SCI	$S C I = {\|\frac{d T}{d ({f_{s}}^{1 / 2})}\|}_{{f_{s}}^{1 / 2} \to 1}$	[4]
Solid-state crack	SAC	$S A C = d V_{f}^{γ} / d T, T \in [T_{γ}^{*}, T_{s}]$	[5]
	M_SAC	$M_{S A C} = [A l] + 0.5 [T i] + 0.3 [N b] + 0.15 [T a]$	[21]