scholarly journals Optimizing the parameters for friction welding stainless steel to copper parts

2016 ◽  
Vol 50 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Mumin Sahin
Keyword(s):  
Stainless Steel ◽  
Friction Welding ◽  
Welding Stainless Steel

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

Materials ◽  
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.

Continuous drive friction welding studies on AISI 430 ferritic stainless steel

2003 ◽  
Vol 8 (3) ◽  
pp. 184-193 ◽  
Author(s):  
V. V. Satyanarayana ◽  
G. Madhusudhan Reddy ◽  
T. Mohandas ◽  
G. Venkata Rao
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Friction Welding ◽  
Aisi 430

METALLURGICAL AND CORROSION CHARACTERIZATION OF POST WELD HEAT TREATED DUPLEX STAINLESS STEEL (UNS S31803) JOINTS BY FRICTION WELDING PROCESS

2016 ◽  
Vol 23 (03) ◽  
pp. 1650013 ◽  
Author(s):  
MOHAMMED ASIF M. ◽  
KULKARNI ANUP SHRIKRISHNA ◽  
P. SATHIYA
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Friction Welding ◽  
Volume Fraction ◽  
Welding Process ◽  
Equilibrium Temperature ◽  
Weld Interface ◽  
Heat Treated ◽  
Weld Heat

The present study focuses on the metallurgical and corrosion characterization of post weld heat treated duplex stainless steel joints. After friction welding, it was confirmed that there is an increase in ferrite content at weld interface due to dynamic recrystallization. This caused the weldments prone to pitting corrosion attack. Hence the post weld heat treatments were performed at three temperatures 1080[Formula: see text]C, 1150[Formula: see text]C and 1200[Formula: see text]C with 15[Formula: see text]min of aging time. This was followed by water and oil quenching. The volume fraction of ferrite to austenite ratio was balanced and highest pit nucleation resistance were achieved after PWHT at 1080[Formula: see text]C followed by water quench and at 1150[Formula: see text]C followed by oil quench. This had happened exactly at parameter set containing heating pressure (HP):40 heating time (HT):4 upsetting pressure (UP):80 upsetting time (UP):2 (experiment no. 5). Dual phase presence and absence of precipitates were conformed through TEM which follow Kurdjumov–Sachs relationship. PREN of ferrite was decreasing with increase in temperature and that of austenite increased. The equilibrium temperature for water quenching was around 1100[Formula: see text]C and that for oil quenching was around 1140[Formula: see text]C. The pit depths were found to be in the range of 100[Formula: see text]nm and width of 1.5–2[Formula: see text][Formula: see text]m.

Amorphization by friction welding between 5052 aluminum alloy and 304 stainless steel

2000 ◽  
Vol 42 (8) ◽  
pp. 807-812 ◽  
Author(s):  
S Fukumoto ◽  
H Tsubakino ◽  
K Okita ◽  
M Aritoshi ◽  
T Tomita
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Friction Welding ◽  
304 Stainless Steel

Linear Friction Welding of Dissimilar Materials 316L Stainless Steel to Zircaloy-4

2018 ◽  
Vol 49 (5) ◽  
pp. 1641-1652 ◽  
Author(s):  
P. Wanjara ◽  
B. S. Naik ◽  
Q. Yang ◽  
X. Cao ◽  
J. Gholipour ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Friction Welding ◽  
316L Stainless Steel ◽  
Dissimilar Materials ◽  
Linear Friction Welding ◽  
Linear Friction
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