Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance
The selective laser melting (SLM) of o-Cr-Mo-W/316L composite with 10wt% Co-Cr-Mo-W addition to 316 L stainless steel (SS) powder is produced to explore it’s the corrosion behavior. The tensile experiment of SLM composites is also measured to investigate the difference between the two samples. The o...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-04-01
|
Series: | Metals |
Subjects: | |
Online Access: | https://www.mdpi.com/2075-4701/11/4/597 |
id |
doaj-7ae7d2cef7c94492b70fd075e77d65ca |
---|---|
record_format |
Article |
spelling |
doaj-7ae7d2cef7c94492b70fd075e77d65ca2021-04-06T23:05:16ZengMDPI AGMetals2075-47012021-04-011159759710.3390/met11040597Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion ResistanceBolin Li0Tingting Wang1Peizhen Li2Shenghai Wang3Li Wang4School of Mechanical & Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, ChinaSchool of Mechanical & Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, ChinaSchool of Mechanical & Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, ChinaSchool of Mechanical & Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, ChinaSchool of Mechanical & Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, ChinaThe selective laser melting (SLM) of o-Cr-Mo-W/316L composite with 10wt% Co-Cr-Mo-W addition to 316 L stainless steel (SS) powder is produced to explore it’s the corrosion behavior. The tensile experiment of SLM composites is also measured to investigate the difference between the two samples. The optimum parameters of SLM 316 L SS and it’s composite samples are obtained by adjusting laser power and scanning speed with the relative density of 99.04 ± 0.69 and 99.15 ± 0.43. The yield strength of samples is increased from 731.96 MPa to 784.09 MPa after doping, and no obvious crack or fracture failure in the tensile samples are observed, indicating that the excellent plasticity is still maintained. The corrosion resistance of samples is improved largely with an order of magnitude lower corrosion current density than that of 316 L SS and increasing of 277 mv of epit Ep. The addition of Cr element in the doped powder contributes to the formation of the passivated film containing Cr. The different pitting corrosion pit occurs mainly around the pre-existing pores of the powder and further extends outward to form pits with the increase of voltage.https://www.mdpi.com/2075-4701/11/4/597selective laser melting316L stainless steelcorrosion resistance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bolin Li Tingting Wang Peizhen Li Shenghai Wang Li Wang |
spellingShingle |
Bolin Li Tingting Wang Peizhen Li Shenghai Wang Li Wang Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance Metals selective laser melting 316L stainless steel corrosion resistance |
author_facet |
Bolin Li Tingting Wang Peizhen Li Shenghai Wang Li Wang |
author_sort |
Bolin Li |
title |
Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance |
title_short |
Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance |
title_full |
Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance |
title_fullStr |
Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance |
title_full_unstemmed |
Selective Laser Melting of 316L Stainless Steel: Influence of Co-Cr-Mo-W Addition on Corrosion Resistance |
title_sort |
selective laser melting of 316l stainless steel: influence of co-cr-mo-w addition on corrosion resistance |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2021-04-01 |
description |
The selective laser melting (SLM) of o-Cr-Mo-W/316L composite with 10wt% Co-Cr-Mo-W addition to 316 L stainless steel (SS) powder is produced to explore it’s the corrosion behavior. The tensile experiment of SLM composites is also measured to investigate the difference between the two samples. The optimum parameters of SLM 316 L SS and it’s composite samples are obtained by adjusting laser power and scanning speed with the relative density of 99.04 ± 0.69 and 99.15 ± 0.43. The yield strength of samples is increased from 731.96 MPa to 784.09 MPa after doping, and no obvious crack or fracture failure in the tensile samples are observed, indicating that the excellent plasticity is still maintained. The corrosion resistance of samples is improved largely with an order of magnitude lower corrosion current density than that of 316 L SS and increasing of 277 mv of epit Ep. The addition of Cr element in the doped powder contributes to the formation of the passivated film containing Cr. The different pitting corrosion pit occurs mainly around the pre-existing pores of the powder and further extends outward to form pits with the increase of voltage. |
topic |
selective laser melting 316L stainless steel corrosion resistance |
url |
https://www.mdpi.com/2075-4701/11/4/597 |
work_keys_str_mv |
AT bolinli selectivelasermeltingof316lstainlesssteelinfluenceofcocrmowadditiononcorrosionresistance AT tingtingwang selectivelasermeltingof316lstainlesssteelinfluenceofcocrmowadditiononcorrosionresistance AT peizhenli selectivelasermeltingof316lstainlesssteelinfluenceofcocrmowadditiononcorrosionresistance AT shenghaiwang selectivelasermeltingof316lstainlesssteelinfluenceofcocrmowadditiononcorrosionresistance AT liwang selectivelasermeltingof316lstainlesssteelinfluenceofcocrmowadditiononcorrosionresistance |
_version_ |
1721537120842022912 |