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Experimental and Numerical Investigation of Process Parameters on the Residual Stresses in the Al-Cu FGM Materials
Experimental Techniques ( IF 1.6 ) Pub Date : 2021-02-09 , DOI: 10.1007/s40799-021-00444-6
A. Gheysarian , M. Honarpisheh

Functionally gradient materials (FGM) are new materials that can offer different properties depending on the structure. In this study, two aluminum and copper powders were combined together by the rules of FGM materials. When two different materials are combined in the structure of the FGM, due to the difference in the thermal expansion coefficients of these two materials, residual stresses are created in the sample. The results of residual stresses measurement were compared with done studies in the past as well as their results. Due to the compressive nature of the FGM manufacturing operations, the measured results show the creation of compressive residual stresses in the structure of the constructed samples. The obtained maximum amount of residual stress from the experimental sample was 130 MPa. Also, a finite element model (FEM) was used to evaluate the residual stresses in the structure of the FGM. The experimental measurements were validated by finite element simulation, which presented a good agreement with an error of 4%. Finally, the effects of pressure values in the powder pressing, layout and heat treatment temperatures were investigated by the FEM.



中文翻译:

Al-Cu FGM材料残余应力的工艺参数实验与数值研究

功能梯度材料(FGM)是可以根据结构提供不同属性的新材料。在这项研究中,根据FGM材料的规则将两种铝粉和铜粉结合在一起。当两种不同的材料在FGM的结构中结合时,由于这两种材料的热膨胀系数不同,会在样品中产生残余应力。残余应力测量的结果与过去的研究结果进行了比较。由于FGM制造操作的压缩性质,测量结果表明在构造的样品结构中产生了压缩残余应力。从实验样品获得的最大残余应力量为130MPa。所以,有限元模型(FEM)用于评估FGM结构中的残余应力。实验测量结果通过有限元模拟进行了验证,结果吻合良好,误差为4%。最后,通过有限元法研究了压力值对粉末压制,布局和热处理温度的影响。

更新日期:2021-02-09
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