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首页> 外文期刊>Progress in Palliative Care >Characterisation of samples from Fe based composite materials prepared by different powder metallurgy techniques
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Characterisation of samples from Fe based composite materials prepared by different powder metallurgy techniques

机译：用不同粉末冶金技术制备的铁基复合材料样品的表征

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Many attempts have been made to manufacture dense metal samples by indirect selective laser sintering (SLS). Unfortunately, current attention focuses on infiltrating low melting metal into SLS samples, which easily worsens their mechanical performances. Therefore, cold isostatic pressing (CIP) was introduced into SLS combined with vacuum sintering (VS) and hot isostatic pressing (HIP) for solving above mentioned problems. Based on powder metallurgy theory, the influences of CIP, VS and HIP on relative densities and mechanical performances of SLS samples were analysed. The results show: relative densities of SLS samples made from Fe-Cu-C increase from 84 to 91˙5 and 95% respectively after CIP at 600 MPa, VS at 1200°C and HIP at 1200°C and 120 MPa; Young's modulus, yield strengths, tensile strengths and elongation percentages of SLS/CIP/hipped samples increase to 139˙5 GPa, 447 MPa, 561 MPa and 7˙9% respectively. Consequently, dense metal samples with better mechanical performances can be manufactured by the hybrid technology.
机译：为了通过间接选择性激光烧结（SLS）来制造致密金属样品，已经进行了许多尝试。不幸的是，当前的注意力集中在将低熔点金属渗透到SLS样品中，这很容易使它们的机械性能恶化。因此，为了解决上述问题，将冷等静压（CIP）与真空烧结（VS）和热等静压（HIP）相结合。基于粉末冶金理论，分析了CIP，VS和HIP对SLS样品相对密度和力学性能的影响。结果表明：在600 MPa的CIP，1200℃的VS和1200°C和120 MPa的HIP之后，Fe-Cu-C制成的SLS样品的相对密度分别从84％增至91˙5和95％。 SLS / CIP /搭接样品的杨氏模量，屈服强度，抗张强度和伸长率分别增加到139×5 GPa，447 MPa，561 MPa和7×9％。因此，可以通过混合技术制造具有更好机械性能的致密金属样品。

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