Characterization of weldability, microstructure, and corrosion resistance of dissimilar welded joint between Mo2FeB2-based cermets and 316L stainless steel

Abstract BioDur 316LS stainless steel is a modified version of Type 316L stainless steel to improve corrosion resistance for surgical implant applications. The alloy is vacuum arc remelted. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-596. Producer or source: Carpenter.

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ENDURAMET 316LN

Alloy Digest ◽

10.31399/asm.ad.ss1219 ◽

2015 ◽

Vol 64 (7) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

316L Stainless Steel ◽

Heat Treating ◽

Type 316L ◽

Technology Corporation ◽

Carpenter Technology Corporation ◽

Type 316L Stainless Steel

Abstract EnduraMet 316LN stainless is a nitrogen strengthened version of Type 316L stainless steel. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1219. Producer or source: Carpenter Technology Corporation.

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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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