Prominent Achievements of Laser Surface Treatment of Martensitic Stainless Steel and Alpha-Beta 6/4 Titanium Alloy

2018 ◽  
Vol 786 ◽  
pp. 87-97 ◽  
Author(s):  
A.A. Hussein ◽  
Samar Reda Al-Sayed ◽  
Salah I. Hassab Elnaby ◽  
Adel A. Nofal ◽  
Haytham Elgazzar
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Surface Treatment ◽  
Heat Input ◽  
Surface Engineering ◽  
Martensitic Stainless Steel ◽  
Laser Surface ◽  
Laser Surface Engineering

Conventional surface treatment processes are known to suffer from several limitations. Among them are energy consumption, complex heat treatment schedules and non-controllable heat affected zones. On the other side, when a high powered laser beam is used as a source of heat for surface treatment it will obviate most of these limitations. Laser surface engineering is one of these advanced surfacing technologies that receive growing interest to improve the surface properties of metals such as hardness, wear and corrosion resistance. Such treatments may be divided into two main categories: (i) those which only involve microstructural modification e.g. laser hardening and laser melting and (ii) other processes which lead to dual changes in microstructure and surface chemistry such as laser alloying and laser cladding. This paper comprises the experimental findings of two significant examples for laser surface engineering. The first study is concerned with surface hardening of AISI 416 martensitic stainless steel whereas the second study involves laser surface cladding of Ti-6Al-4V alloy. The outcome of the first work is a notable improvement of toughness at the same level of hardness and wear resistance as compared to the conventional hardening treatment. Additionally, the optimum condition for combined wear resistance, impact toughness and corrosion resistance was recorded at a laser heat input value of 21 J•mm-2. The second study is concerned with laser surface cladding of the titanium alloy with a powder blend composed of 60 wt% of WC and 40 wt% NiCrBSi alloy, by means of a high power Nd:YAG 2.2 kW laser. The best clad layers were obtained at a specific heat input of 60 J•mm-2. More than three-fold enhancement of the microhardness of the clad layers was achieved combined with a remarkable improvement of the alloy wear resistance.

CTS-BD30P ALLOY

Alloy Digest ◽  
2013 ◽  
Vol 62 (8) ◽  
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Powder Metal ◽  
High Concentration ◽  
Vanadium Carbides

Abstract Carpenter CTS-BD30P alloy is a powder metal processed, air-hardening, martensitic stainless steel that offers corrosion resistance comparable with Type 440C stainless, combined with excellent toughness and wear resistance attributed to a high concentration of vanadium carbides. The Carpenter CTS family of alloys is used for many blade applications. This datasheet provides information on composition and physical properties. It also includes information on corrosion resistance as well as heat treating and powder metal forms. Filing Code: SS-1154. Producer or source: Carpenter Specialty Alloys.

CRUCIBLE CPM S30V

Alloy Digest ◽  
2003 ◽  
Vol 52 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Corrosion And Wear ◽  
Better Than

Abstract Crucible CPM S30V is a martensitic stainless steel designed with a combination of toughness, wear resistance, and corrosion resistance equal to or better than 440C. This datasheet provides information on composition, physical properties, microstructure, hardness, and elasticity as well as fracture toughness. It also includes information on corrosion and wear resistance as well as heat treating and machining. Filing Code: SS-891. Producer or source: Crucible Service Centers.

Influence of laser surface hardening on the corrosion resistance of martensitic stainless steel

2007 ◽  
Vol 52 (27) ◽  
pp. 7796-7801 ◽  
Author(s):  
Y. Van Ingelgem ◽  
I. Vandendael ◽  
D. Van den Broek ◽  
A. Hubin ◽  
J. Vereecken
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Surface Hardening ◽  
Martensitic Stainless Steel ◽  
Laser Surface ◽  
Laser Surface Hardening

CARPENTER CTS B75P ALLOY

Alloy Digest ◽  
2015 ◽  
Vol 64 (1) ◽  
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Corrosion And Wear ◽  
Powder Metal

Abstract Carpenter CTS-B75P alloy is a powder metal processed, air-hardening, martensitic stainless steel that offers corrosion resistance comparable with Type 440C stainless combined with excellent wear resistance and tempered hardness capability up to HRC 63. This datasheet provides information on composition, physical properties, and hardness. It also includes information on corrosion and wear resistance as well as forming, heat treating, machining, and powder metal forms. Filing Code: SS-1200. Producer or source: Carpenter Specialty Alloys.

Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment

2008 ◽  
Vol 384 ◽  
pp. 157-183 ◽  
Author(s):  
Ibrahim M. Ghayad ◽  
Madiha Shoeib ◽  
Taha Mattar ◽  
Huda M. Hussain
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Surface Treatment ◽  
Laser Irradiation ◽  
Laser Treatment ◽  
Surface Composition ◽  
Specific Treatment ◽  
Laser Surface ◽  
Laser Surface Treatment ◽  
Aisi 304

Stainless steel AISI 304 was laser treated to enhance corrosion resistance and improve surface properties. . This alloy has many applications in auto industry (car body,) as well as oil and gas industry. Different conditions were applied in the laser surface treatment, namely: laser power density, scan speed, distance between paths, medium gas (air, argon and nitrogen). After laser treatment, the samples microstructures were investigated using optical microscope to examine micro structural changes due to laser irradiation. Specimen surfaces were investigated using XRD, SEM and EDAX before and after laser treatment to examine the surface composition changes brought by laser irradiation. Results showed that laser irradiation enhances the corrosion resistance of AISI 304 Stainless steel to a large extent. Corrosion rates as low as 0.011 mpy for laser treated samples were obtained in comparison to 0.952 mpy obtained for the untreated samples. Superior pitting corrosion resistance was obtained under specific treatment conditions. The enhancement of corrosion resistance depends on the laser irradiation conditions. The corrosion protection afforded by laser treatment is attributed mainly to the grain refinement of the top surface layer. This layer is found to consist of nano-scale grains.

UGI 4418

Alloy Digest ◽  
2018 ◽  
Vol 67 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Corrosion And Wear ◽  
Temperature Performance ◽  
Excellent Corrosion Resistance

Abstract UGI 4418 is a martensitic stainless steel with excellent corrosion resistance in aggressive environments combined with good mechanical properties, including toughness. It exhibits excellent cryogenic properties. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance, corrosion and wear resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1292. Producer or source: Schmolz + Bickenbach USA Inc..

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