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首页> 外文期刊>Materials Science and Engineering >Effect of hot isostatic pressing on the microstructure and mechanical properties of 17-4PH stainless steel parts fabricated by selective laser melting
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Effect of hot isostatic pressing on the microstructure and mechanical properties of 17-4PH stainless steel parts fabricated by selective laser melting

机译：热等静压对17-4Ph不锈钢零件微观结构和机械性能的影响选择性激光熔化

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摘要

17-4PH stainless steel parts, fabricated by selective laser melting, were subjected to the solution and aging treatments conducted under vacuum and hot isostatic pressing (HIP) conditions. The microstructure of as-built and heat-treated specimens were characterized using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Mechanical properties were evaluated using microhardness and tensile testing. The relative density of the as-built samples was improved after the conduction of HIP treatment. Microstructural characterization showed that precipitates with the co-occurrences of Cu-, Mn-, Si- and Nb-enrichments were formed in the HIP-processed specimen. Results of mechanical testing indicated that a simultaneous improvement of tensile strength and ductility could be obtained through solutionizing and aging treatments done in the HIP followed by a high-pressure gas quenching. In addition, a significant enhancement of tensile strength without sacrificing ductility could be attained by combining solutionizing treatment done under high pressure and consequent aging followed with water cooling.
机译：通过选择性激光熔化制造的17-4PH不锈钢零件，进行真空和热等静压（臀部）条件下进行的溶液和老化处理。使用X射线衍射，扫描电子显微镜和透射电子显微镜表征配制和热处理样品的微观结构。使用显微硬度和拉伸试验评估机械性能。在髋关节处理传导后，改善了各种样品的相对密度。微观结构表征显示，在髋加工标本中形成了Cu-，Mn-，Si和Nb富集的共发生的沉淀物。机械测试的结果表明，通过在髋髋中完成的溶液和老化处理，然后高压气体淬火可以同时提高拉伸强度和延展性。此外，通过在高压下组合溶液化处理，随着水冷，可以通过组合在高压下进行溶解处理来实现不牺牲延展性的抗拉强度的显着提高。

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  • 来源
    《Materials Science and Engineering》 |2021年第8期|141035.1-141035.11|共11页
  • 作者

    Qi Shi; Feng Qin; Kefeng Li; Xin Liu; Ge Zhou;

  • 作者单位

    Institute of Materials and Processing Guangdong Academy of Sciences Guangzhou 510650 China Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application Guangzhou 510650 China National Engineering Research Center of Powder Metallurgy of Titanium & Rare Metals Guangzhou 510650 China;

    Institute of Materials and Processing Guangdong Academy of Sciences Guangzhou 510650 China School of Materials Science and Engineering Shenyang University of Technology Shenyang 110870 China Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application Guangzhou 510650 China National Engineering Research Center of Powder Metallurgy of Titanium & Rare Metals Guangzhou 510650 China;

    Institute of Materials and Processing Guangdong Academy of Sciences Guangzhou 510650 China Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application Guangzhou 510650 China National Engineering Research Center of Powder Metallurgy of Titanium & Rare Metals Guangzhou 510650 China;

    Institute of Materials and Processing Guangdong Academy of Sciences Guangzhou 510650 China Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application Guangzhou 510650 China National Engineering Research Center of Powder Metallurgy of Titanium & Rare Metals Guangzhou 510650 China;

    School of Materials Science and Engineering Shenyang University of Technology Shenyang 110870 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Hot isostatic pressing; Selective laser melting; 17-4PH stainless Steel; Precipitation; Mechanical properties;

    机译：热性等静压;选择性激光熔化;17-4PH不锈钢;沉淀;机械性能;

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