A comparative study of laser surface hardening of AISI 410 and 420 martensitic stainless steels by using diode laser

Moradi, Mahmoud; Arabi, Hossein; Nasab, Saied Jamshidi; Benyounis, K.Y.

doi:10.1016/j.optlastec.2018.10.013

Cited by 60 publications

(25 citation statements)

References 22 publications

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“…This steel conducted relatively high hardness and strength after tempering at such high temperature of 600-700 °C [28]. In the present study, to investigate the hardness and toughness of the furnace heat treatment hardening samples, tempering the sample with high temperatures of 650 °C, tempering the sample with a minimum of 250 °C [33], and not tempering the sample, compared to the laser-hardened sample, were accomplished. Toughness properties by impact test (according to ASTM-A370 standard at ambient temperature) and microstructure analysis have been evaluated.…”

Section: Comparison Of the Impact Test And Fracture Toughnessmentioning

confidence: 99%

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An experimental investigation of the effects of diode laser surface hardening of AISI 410 stainless steel and comparison with furnace hardening heat treatment

Moradi

Arabi

Kaplan

2019

J Braz. Soc. Mech. Sci. Eng.

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This study investigated the ability of the continuous wave diode laser surface hardening of AISI 410 martensitic stainless steel with a maximum power of 1600 W. Variable process parameters scanning speed (4-7 mm/s), laser power (1200-1600 W) and stand-off distance (65-75 mm) were considered in this study. Microhardness, the geometry of hardened layer (depth and width), microhardness deviation from the base metal microhardness (MHD), microstructure analysis of the laser-hardened zone through optical microscopy and field emission scanning electron microscopy and percentage of the ferrite phase in AISI 410 microstructure by using Clemex software were considered as process output responses. Results confirmed that by increasing the laser power and reducing the scanning speed, the surface hardness and the depth of hardness increase. It is also revealed the width of the hardened area increases by enhancing stand-off distance and reducing the laser power. Maximum hardness of 630 HV0.3 with 2.2 mm depth is obtained. Also, the furnace hardening heat treatment is compared with the laser hardening process. Microstructure, microhardness, and impact tests of the two processes are compared. Results showed that the hardness of the diode laser is 1.4 times the hardness of the furnace hardening heat treatment.

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Section: Comparison Of the Impact Test And Fracture Toughnessmentioning

confidence: 99%

“…Determination of ferrite percentage by Clemex software a sample #1, b sample #Profile of ferrite percent in microhardness Image of FHHT cycle for AISI 410 stainless steel[33] …”

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confidence: 99%

An experimental investigation of the effects of diode laser surface hardening of AISI 410 stainless steel and comparison with furnace hardening heat treatment

Moradi

Arabi

Kaplan

2019

J Braz. Soc. Mech. Sci. Eng.

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“…The 410 steel is nickel alloy which is heat and corrosion-resistant. Selected properties of 410 steel are shown in the subject of the literature [22][23][24]. The choice of the subject of research depended on often identified types of incompatibilities (linear indications).…”

Section: The Subject Of Research and Materialsmentioning

confidence: 99%

Analysis of the Quality of Bearing Housing and Improving the Method of Identifying the Root of Incompatibility

Siwiec

Pacana

2020

Terotechnology XI

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“…Two industrial massive thermal treatments were chosen and the results in terms of hardness were also compared to laser hardening performance. Surface hardening, in facts, is usually used to improve the tribological properties as corrosion, wear and hardness [16] that are of particular importance for AISI 420 SS.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of AISI 420 Stainless Steel: processes validation, defects analysis and mechanical characterization in different process and post-process conditions.

Liverani

Fortunato

2021

Preprint

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Stainless steel (SS) alloys produced by Laser-based Powder Bed Fusion (LPBF) process offers comparable and sometime improved mechanical properties respect to conventionally processed materials. Some of these steels have been extensively studied in the last decade, however additively manufactured martensitic SS, as AISI 420, need further research in characterizing their post built quality and mechanical behaviour. This lack of information on martensitic SS is not consistent with their growing demand in the automotive, medical and aerospace industries due to their good corrosion resistance, high hardness and good tensile properties. Selection of the appropriate process parameters and post treatments plays a fundamental role in determining final properties. For this reason, the effect of LPBF process parameters and different heat treatments on density, defects characteristics and location, roughness and mechanical properties of AISI 420 were investigated in this paper. A first experimental campaign was carried out to establish different set of suitable process parameters for industrial applications. Starting from this result, the detected defects properties was investigated by Computed Tomography (CT) scans. Dimensions, sphericity and distributions of defects inside the volume were analysed and compared between samples manufactured with different parameters. In the second part of the paper, the influence of process and post process conditions on mechanical properties was investigated. The final presented results establish a correlation between the involved production cycle and the resulting properties of LPBF AISI 420 specimens.

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A comparative study of laser surface hardening of AISI 410 and 420 martensitic stainless steels by using diode laser

Cited by 60 publications

References 22 publications

An experimental investigation of the effects of diode laser surface hardening of AISI 410 stainless steel and comparison with furnace hardening heat treatment

An experimental investigation of the effects of diode laser surface hardening of AISI 410 stainless steel and comparison with furnace hardening heat treatment

Analysis of the Quality of Bearing Housing and Improving the Method of Identifying the Root of Incompatibility

Additive Manufacturing of AISI 420 Stainless Steel: processes validation, defects analysis and mechanical characterization in different process and post-process conditions.

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