Post processing of additively manufactured 316L stainless steel by multi-jet polishing method

Wang, Chunjin; Loh, Yee Man; Cheung, Chi Fai; Liang, Xiaoliang; Zhang, Zili; Ho, Lai Ting

doi:10.1016/j.jmrt.2023.01.054

Cited by 17 publications

(7 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are two competing factors which affect the HE susceptibility of AM316L SS: the surface roughness and the hydrogen trapping sites [ 19 , 20 , 21 , 22 , 23 , 45 ]. Hydrogen atoms effectively diffuse into the rough surface as the surface flaws and other imperfections, such as pores, serve as entrances for the H atoms, as reported in the literature [ 24 , 44 , 45 , 52 ]. H-trapping sites are also significant; these are reversible and irreversible traps in the structure, which capture H atoms inside the material.…”

Section: Discussionmentioning

confidence: 99%

Effects of Wall Thickness Variation on Hydrogen Embrittlement Susceptibility of Additively Manufactured 316L Stainless Steel with Lattice Auxetic Structures

et al. 2023

View full text Add to dashboard Cite

In the present study, the hydrogen embrittlement (HE) susceptibility of an additively manufactured (AM) 316L stainless steel (SS) was investigated. The materials were fabricated in the form of a lattice auxetic structure with three different strut thicknesses, 0.6, 1, and 1.4 mm, by the laser powder bed fusion technique at a volumetric energy of 70 J·mm−3. The effect of H charging on the strength and ductility of the lattice structures was evaluated by conducting tensile testing of the H-charged specimens at a slow strain rate of 4 × 10−5 s−1. Hydrogen was introduced to the specimens via electrochemical charging in an NaOH aqueous solution for 24 h at 80 °C before the tensile testing. The microstructure evolution of the H-charged materials was studied using the electron backscattered diffraction (EBSD) technique. The study revealed that the auxetic structures of the AM 316L-SS exhibited a slight reduction in mechanical properties after H charging. The tensile strength was slightly decreased regardless of the thickness. However, the ductility was significantly reduced with increasing thickness. For instance, the strength and uniform elongation of the auxetic structure of the 0.6 mm thick strut were 340 MPa and 17.4% before H charging, and 320 MPa and 16.7% after H charging, respectively. The corresponding values of the counterpart’s 1.4 mm thick strut were 550 MPa and 29% before H charging, and 523 MPa and 23.9% after H charging, respectively. The fractography of the fracture surfaces showed the impact of H charging, as cleavage fracture was a striking feature in H-charged materials. Furthermore, the mechanical twins were enhanced during tensile straining of the H-charged high-thickness material.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of Wall Thickness Variation on Hydrogen Embrittlement Susceptibility of Additively Manufactured 316L Stainless Steel with Lattice Auxetic Structures

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The results of the orthogonal array design of experiments confirmed that although MRR increases directly with pressure and standoff distance, it showed an increment and then a reduction with an increase in the abrasive mesh size. More recently, Wang et al [ 105 ] proposed a multi-jet polishing (MJP) method to finish additively manufactured 316L stainless steel. Figure 15 shows the top surface topography before and after polishing.…”

Section: Internal Surface Finishingmentioning

confidence: 99%

“… SEM photographs of the top surfaces of 316L stainless steel ( a ) before and ( b ) after MJP polishing. Composition analysis ( c ) before and ( d ) after MJP polishing [ 105 ]. …”

Section: Figurementioning

confidence: 99%

An Overview of the Latest Progress in Internal Surface Finishing of the Additively Manufactured Metallic Components

Davoodi,

Taghian,

Carbone

et al. 2023

Materials

View full text Add to dashboard Cite

Fast progress in near-net-shape production of parts has attracted vast interest in internal surface finishing. Interest in designing a modern finishing machine to cover the different shapes of workpieces with different materials has risen recently, and the current state of technology cannot satisfy the high requirements for finishing internal channels in metal-additive-manufactured parts. Therefore, in this work, an effort has been made to close the current gaps. This literature review aims to trace the development of different non-traditional internal surface finishing methods. For this reason, attention is focused on the working principles, capabilities, and limitations of the most applicable processes, such as internal magnetic abrasive finishing, abrasive flow machining, fluidized bed machining, cavitation abrasive finishing, and electrochemical machining. Thereafter, a comparison is presented based on which models were surveyed in detail, with particular attention to their specifications and methods. The assessment is measured by seven key features, with two selected methods deciding their value for a proper hybrid machine.

show abstract

“…Both techniques have a growing interest due to inducing microstructural changes that consequently enhance the mechanical properties of the investigated material [10]. On the other hand, mechanical surface treatment techniques (i.e., shot-peening and sand-blasting, labelled as SP and SB, respectively) are widely used in the industrial market, but the interest during the period of interest remains constant, which highlights that both technologies are stable [11]. Currently, the laser surface treatment (LST) technique is starting to receive more interest in this field [12].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the laser surface treatment (LST) technique is starting to receive more interest in this field [12]. Although the use of the laser method is faster compared with other surface the period of interest remains constant, which highlights that both technologies are stable [11]. Currently, the laser surface treatment (LST) technique is starting to receive more interest in this field [12].…”

Section: Introductionmentioning

confidence: 99%

Overview of Surface Modification Strategies for Improving the Properties of Metastable Austenitic Stainless Steels

Rezayat

Moghadam

Moradi

et al. 2023

Metals

View full text Add to dashboard Cite

Metastable austenitic stainless steels (MASS) are widely used in various industrial applications due to their exceptional compromise between mechanical properties and corrosion resistance. However, the mechanical properties of these materials can be further enhanced by surface treatments. This paper reviews various surface treatment methodologies used to improve the mechanical properties of MASS, with particular attention to laser treatments. The effects of these surface treatments on the microstructure and chemical composition in the thermal affected zone of the MASS are discussed, and their impact on the material’s mechanical properties, such as hardness, tensile strength, and fatigue life, are investigated in detail. Additionally, the paper highlights the limitations of these surface treatments and points out some areas where further research is needed. The findings presented can be used to guide the selection of appropriate surface treatment techniques for specific applications, ultimately improving the performance and lifespan of MASS in various industrial settings.

show abstract

Post processing of additively manufactured 316L stainless steel by multi-jet polishing method

Cited by 17 publications

References 75 publications

Effects of Wall Thickness Variation on Hydrogen Embrittlement Susceptibility of Additively Manufactured 316L Stainless Steel with Lattice Auxetic Structures

Effects of Wall Thickness Variation on Hydrogen Embrittlement Susceptibility of Additively Manufactured 316L Stainless Steel with Lattice Auxetic Structures

An Overview of the Latest Progress in Internal Surface Finishing of the Additively Manufactured Metallic Components

Overview of Surface Modification Strategies for Improving the Properties of Metastable Austenitic Stainless Steels

Contact Info

Product

Resources

About