Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

In-situ measurement and control of the tool-workpiece interface temperature during friction stir processing of 304/304L stainless steel

Journal Article · · Materials Today Communications
 [1];  [1];  [1];  [1];  [2];  [1]
  1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  2. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); City Univ. of Hong Kong, Kowloon (Hong Kong)
Friction stir processing of 304/304L stainless steel is an area of interest for repair of spent nuclear fuel canisters. To enable repair without canister deflection or fracture, it is necessary to define the limitations for the depth of the processing zone which will be critically dependent on the thermal history of the material. Here, this work provides the first direct measurement of the interface temperature for friction stir processing of steel. The measured temperature is in the range of 850–1050 °C which is 20–30 % higher than previously reported values. Notably, the peak temperature occurs at the pin tip which is attributed to a higher sticking fraction and subsequently higher strain rate near the tool axis of rotation. Furthermore, a clear correlation between the temperature, grain size, and hardness is established within a single weld nugget and across different processing conditions. In the future, this data may lead to improved process modelling through direct validation and allow for property optimization through direct microstructure control.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2340117
Report Number(s):
PNNL-SA--188434
Journal Information:
Materials Today Communications, Journal Name: Materials Today Communications Vol. 38; ISSN 2352-4928
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (18)

A mechanistic study of transgranular stress corrosion cracking of type 304 stainless steel journal June 1991
Microstructures in Friction Stir Welded 304 Austenitic Stainless Steel journal March 2005
Effects of tool–workpiece interface temperature on weld quality and quality improvements through temperature control in friction stir welding journal November 2013
Three-dimensional modeling of the friction stir-welding process journal November 2002
Thermal modeling of friction stir welding in a moving coordinate system and its validation journal May 2003
Recrystallization in type 304L stainless steel during friction stirring journal February 2005
Friction stir processing of dual certified 304/304L austenitic stainless steel for improved cavitation erosion resistance journal March 2019
Pitting and stress corrosion cracking behavior in welded austenitic stainless steel journal January 2005
Simultaneous measurement of tool torque, traverse force and axial force in friction stir welding journal October 2013
Leak-tight crack repair for 304L stainless steel using friction surfacing journal July 2022
Effect of tool tilt angle on weld joint properties of friction stir welded AISI 316L stainless steel sheets journal January 2020
Flow visualization and estimation of strain and strain-rate during friction stir process journal July 2010
Integrated modeling of friction stir welding of 6xxx series Al alloys: Process, microstructure and properties journal January 2012
Why stainless steel corrodes journal February 2002
An analytical model for the heat generation in friction stir welding journal November 2003
Measurement of Tool-Workpiece Interface Temperature Distribution in Friction Stir Welding journal January 2014
Thermal history in UNS S32205 duplex stainless steel friction stir welds journal February 2014
Numerical modelling of 3D plastic flow and heat transfer during friction stir welding of stainless steel journal September 2006