Selective laser melting (SLM) has shown its advantages in metal additive manufacturing. During the process, the product is formed layer by layer using a laser beam to melt each layer and establish the 3D dimensions of the product. Therefore, this technology permits us to fabricate the complex shape from lab-scale to large scale of products in addition to the minimal defects in the microstructure of materials. Upon, the technique has been applied to produce many types of metal and alloys for applications, especially for the use in biomedical applications or aerospace industry. As with other techniques, to obtain the expected structure and properties, the optimal process parameters need to be investigated for each material and equipment that is used for SLM process. 316L stainless steel is one of the materials that received intensive attention for SLM due to its highly compatible with SLM and the popular use of this stainless steel in variety applications. In this work, number of 316L stainless steel samples has been produced by SLM process using the MeltMaster 3D-550 domestic equipment to determine the suitable process parameters such as laser power and scanning speed for production of 316L stainless steel. The results show that laser power and scanning speed are very important parameters that need to be determined for each materials process, 316L stainless steel for instance in this work, to achieve the material with minimal defects (the mount of pores and pore size).

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The Influence of the Technique Parameters on the Pores of 316L Stainless Steel Produced by Selective Laser Melting

  • I. S. Kushnir,
  • A. P. Adylina,
  • T. B. Trung,
  • N. T. Tung,
  • D. T. Ha

摘要

Selective laser melting (SLM) has shown its advantages in metal additive manufacturing. During the process, the product is formed layer by layer using a laser beam to melt each layer and establish the 3D dimensions of the product. Therefore, this technology permits us to fabricate the complex shape from lab-scale to large scale of products in addition to the minimal defects in the microstructure of materials. Upon, the technique has been applied to produce many types of metal and alloys for applications, especially for the use in biomedical applications or aerospace industry. As with other techniques, to obtain the expected structure and properties, the optimal process parameters need to be investigated for each material and equipment that is used for SLM process. 316L stainless steel is one of the materials that received intensive attention for SLM due to its highly compatible with SLM and the popular use of this stainless steel in variety applications. In this work, number of 316L stainless steel samples has been produced by SLM process using the MeltMaster 3D-550 domestic equipment to determine the suitable process parameters such as laser power and scanning speed for production of 316L stainless steel. The results show that laser power and scanning speed are very important parameters that need to be determined for each materials process, 316L stainless steel for instance in this work, to achieve the material with minimal defects (the mount of pores and pore size).