Defect evolution of 409L stainless steel in high-speed TIG welding

Abstract LESCALLOY BG42 VIM-VAR is a martensitic stainless high-speed steel that combines the temper resistance and hot hardness characteristics of M-50 high-speed steel with the corrosion resistance of AISI Type 440C stainless steel. (See also LESCALLOY BG42, Alloy Digest SS-280, October 1972.) This datasheet provides information on composition, physical properties, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: SS-179. Producer or source: Latrobe Steel Company. Originally published as Lesco BG42, March 1966, revised February 1992. See also Alloy Digest SS-356, October 1978.

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Dataset and methodology on identification and correlation of secondary carbides with microstructure, wear mechanism, and tool performance for different CERMET grades during high-speed dry finish turning of AISI 304 stainless steel

Data in Brief ◽

10.1016/j.dib.2020.105753 ◽

2020 ◽

Vol 31 ◽

pp. 105753

Author(s):

Uttkarsh Patel ◽

Sushant Rawal ◽

A.F.M. Arif ◽

Stephen Veldhuis

Keyword(s):

Stainless Steel ◽

Wear Mechanism ◽

High Speed ◽

304 Stainless Steel ◽

Aisi 304 Stainless Steel ◽

Aisi 304 ◽

Finish Turning ◽

Secondary Carbides ◽

Tool Performance

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Cutting edge wear in high-speed stainless steel end milling

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-021-07006-5 ◽

2021 ◽

Author(s):

Mohammad Malekan ◽

Camilla D. Bloch-Jensen ◽

Maryam Alizadeh Zolbin ◽

Klaus B. Ørskov ◽

Henrik M. Jensen ◽

...

Keyword(s):

Stainless Steel ◽

High Speed ◽

End Milling ◽

Cutting Edge ◽

Edge Wear

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Microstructural Investigation of a Friction-Welded 316L Stainless Steel with Ultrafine-Grained Structure Obtained by Hydrostatic Extrusion

Materials ◽

10.3390/ma14061537 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1537

Author(s):

Beata Skowrońska ◽

Tomasz Chmielewski ◽

Mariusz Kulczyk ◽

Jacek Skiba ◽

Sylwia Przybysz

Keyword(s):

Stainless Steel ◽

Electron Microscope ◽

Friction Welding ◽

High Speed ◽

316L Stainless Steel ◽

Welded Joint ◽

Microstructural Investigation ◽

Ultrafine Grained Structure ◽

Ultrafine Grained ◽

Friction Joint

The paper presents the microstructural investigation of a friction-welded joint made of 316L stainless steel with an ultrafine-grained structure obtained by hydrostatic extrusion (HE). Such a plastically deformed material is characterized by a metastable state of energy equilibrium, increasing, among others, its sensitivity to high temperatures. This feature makes it difficult to weld ultra-fine-grained metals without losing their high mechanical properties. The use of high-speed friction welding and a friction time of <1 s reduced the scale of the weakening of the friction joint in relation to result obtained in conventional rotary friction welding. The study of changes in the microstructure of individual zones of the friction joint was carried out on an optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM) and electron backscattered diffraction (EBSD) analysis system. The correlation between the microstructure and hardness of the friction joint is also presented. The heat released during the high-speed friction welding initiated the process of dynamic recrystallization (DRX) of single grains in the heat-affected zone (HAZ). The additional occurrence of strong plastic deformations (in HAZ) during flash formation and internal friction (in the friction weld and high-temperature HAZ) contributed to the formation of a highly deformed microstructure with numerous sub-grains. The zones with a microstructure other than the base material were characterized by lower hardness. Due to the complexity of the microstructure and its multifactorial impact on the properties of the friction-welded joint, strength should be the criterion for assessing the properties of the joint.

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Influence of Activated Fluxes on the Bead Shape of A-TIG Welds on Carbon and Low-Alloy Steels in Comparison with Stainless Steel AISI 304L

Metals ◽

10.3390/met11040530 ◽

2021 ◽

Vol 11 (4) ◽

pp. 530

Author(s):

Jerzy Niagaj

Keyword(s):

Stainless Steel ◽

Penetration Depth ◽

High Strength ◽

Tig Welding ◽

Low Alloy Steels ◽

Aisi 304L ◽

A Tig Welding ◽

Alloy Steels ◽

Steel Aisi ◽

Stainless Steel Aisi

The article presents results of comparative A-TIG welding tests involving selected unalloyed and fine-grained steels, as well as high-strength steel WELDOX 1300 and austenitic stainless steel AISI 304L. The tests involved the use of single ingredient activated fluxes (Cr2O3, TiO2, SiO2, Fe2O3, NaF, and AlF3). In cases of carbon and low-alloy steels, the tests revealed that the greatest increase in penetration depth was observed in the steels which had been well deoxidized and purified during their production in steelworks. The tests revealed that among the activated fluxes, the TiO2 and SiO2 oxides always led to an increase in penetration depth during A-TIG welding, regardless of the type and grade of steel. The degree of the aforesaid increase was restricted within the range of 30% to more than 200%.

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