Investigation on Compaction Densification Behaviors of Multicomponent Mixed Metal Powders to Manufacture Silver-Based Filler Metal Sheets
Investigation on Compaction Densification Behaviors of Multicomponent Mixed Metal Powders to Manufacture Silver-Based Filler Metal Sheets
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DOI：
10.1007/s13369-018-3505-7
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发表时间：
2018-08
影响因子：
2.9
通讯作者：
Mengcheng Zhou;Shang-yu Huang;Y. Lei;Wei Liu;S. Yan
中科院分区：
文献类型：
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作者：
Mengcheng Zhou;Shang-yu Huang;Y. Lei;Wei Liu;S. Yan
采用粉末压制结合烧结工艺制备了银基钎料薄板，对Ag50Cu50和Ag60Cu30Sn10两种混合金属粉末的致密化行为进行了模拟和研究。采用Drucker-Prager Cap模型结合压制方程分析了混合金属粉末的压制行为。首先，进行了各种粉末压制实验，确定了粉末材料参数，并通过模压实验确定了摩擦系数。并利用线性Heckel方程和非线性Gerdemn-Jablonski方程对粉末压制机理进行了分析。观察到润滑剂对粉末模压成形过程中粉末变形和重排致密化机制的影响。最后，将有限元模拟结果与验证实验数据进行对比，验证所确定的本构模型。结果表明，所建立的模型能够准确地描述混合粉末的致密化行为，可用于模具设计和工艺参数优化的模拟。
The powder compaction combines sintering process method was used to fabricate silver-based filler metal thin sheet; the densification behaviors of two mixed metal powder (Ag50Cu50 and Ag60Cu30Sn10) were modeled and investigated. The Drucker–Prager Cap model combines with compaction equations was employed to analyze the mixed metal powder compaction behavior. Firstly, various powder compaction experiments were conducted to determine the powder material parameters, and the friction coefficients were determined experimentally by die compaction. Furthermore, the linear Heckel and nonlinear Gerdemann–Jablonski compaction equations were used to analyze the powder compaction mechanisms. It was observed that lubricant affects the powder deformation and rearrangement densification mechanisms during the powder die compaction process. Finally, finite element modeling results were compared with the validation experiments data to validate the determined constitutive model. The result shows that the established models can accurately describe the mixed powders densification behaviors, which could be used in simulation of tool designing and process parameters optimizing.