Experimental and numerical modeling study of solidification cracking in Alloy 52M filler metal in the cast pin tear test

Experimental and numerical modeling study of solidification cracking in Alloy 52M filler metal in the cast pin tear test
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铸销撕裂试验中合金 52M 填充金属凝固裂纹的实验和数值模拟研究

DOI:
10.1007/s40194-019-00720-5
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发表时间:
2019
影响因子:
2.1
通讯作者:
Przybylowicz, Eric
Przybylowicz, Eric
中科院分区:
材料科学3区
文献类型:
--
作者:
Wang, Huimin;Alexandrov, Boian T.;Przybylowicz, Eric

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利用商业软件PROCAST™建立了铸销撕裂试验凝固过程的有限元分析模型。通过对52M合金焊料的平行CPTT试验,验证了对凝固和应变累积序列以及裂纹敏感区域位置的模拟预测。热撕裂指示剂(HTI)和有效塑性应变(EPS)的预测销钉长度与实验测定的零到100%CPTT裂纹曲线具有很好的相关性。采用并行计算模型和CPTT实验对52M合金钎料凝固裂纹的临界应变进行了定量计算。这项研究表明,焊接性试验的数值模拟可用于量化与工程合金开裂敏感性相关的材料特性。
Finite element analysis (FEA) model of the solidification process in the cast pin tear test (CPTT) was developed using the commercial software ProCAST™. Modeling predictions of the solidification and strain accumulation sequences and of the cracking sensitive region location were validated using parallel CPTT testing of Alloy 52M filler metal. Predicted pin length dependences of the hot tearing indicator (HTI) and the effective plastic strain (EPS) were in good correlation with the experimentally determined zero to 100% CPTT cracking curve in Alloy 52 M. Sensitivity study with the developed model identified material properties and test parameters with strong influence on the accuracy of modeling predictions. Parallel computational modeling and CPTT experimentation was performed to quantify the critical strain for solidification cracking in Alloy 52M filler metal. This study demonstrated that numerical modeling of weldability tests can be used for quantification of material-specific properties related to cracking susceptibility in engineering alloys.
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