TY - CHAP
T1 - Friction stir welding of steels using a tool made of iridium-containing nickel base superalloy
AU - Nakazawa, Tatsuya
AU - Sato, Yutaka S.
AU - Kokawa, Hiroyuki
AU - Ishida, Kiyohito
AU - Omori, Toshihiro
AU - Tanaka, Kunihiro
AU - Sakairi, Koichi
N1 - Publisher Copyright:
© 2016 by The Minerals, Metals & Materials Society.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - An addition of Ir to Ni base super alloy can increase the high temperature strength. An Ircontaining Ni base superalloy produced through a process of rapid solidification casting, solution heat treatment and subsequent aging was found to exhibit a compressive strength greater than 500 MPa at 1000°C, which suggested it would be a suitable material to use in a friction stir welding (FSW) tool for high-softening-temperature materials, such as stainless steels and carbon steels. Precision tilt casting of this Ir-containing Ni base superalloy into a copper mold followed by appropriate heat treatment, resulted in tools with a fine γ/γ' microstructure containing intergranular carbides. These tools were subsequently proven capable of producing welds on AISI 304 stainless steel and ultrahigh carbon steel without large deformation or severe wear.
AB - An addition of Ir to Ni base super alloy can increase the high temperature strength. An Ircontaining Ni base superalloy produced through a process of rapid solidification casting, solution heat treatment and subsequent aging was found to exhibit a compressive strength greater than 500 MPa at 1000°C, which suggested it would be a suitable material to use in a friction stir welding (FSW) tool for high-softening-temperature materials, such as stainless steels and carbon steels. Precision tilt casting of this Ir-containing Ni base superalloy into a copper mold followed by appropriate heat treatment, resulted in tools with a fine γ/γ' microstructure containing intergranular carbides. These tools were subsequently proven capable of producing welds on AISI 304 stainless steel and ultrahigh carbon steel without large deformation or severe wear.
KW - Friction stir welding
KW - Ir-containing ni base superalloy
KW - Mechanical properties
KW - Microstructure
KW - Stainless steel
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U2 - 10.1007/978-3-319-48173-9_8
DO - 10.1007/978-3-319-48173-9_8
M3 - Chapter
AN - SCOPUS:85015208298
SN - 9781119082491
SP - 77
EP - 82
BT - Friction Stir Welding and Processing VIII
PB - Springer International Publishing
ER -