@inproceedings{505551bef9e742ad95dfb9c361d192a3,
title = "Friction stir welding of steels using a tool made of iridium-containing Nickel base superalloy",
abstract = "An addition of Ir to Ni base super alloy can increase the high temperature strength. An lr-containing 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 lr-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.",
keywords = "Friction stir welding, Lr-containing Ni base superalloy, Mechanical properties, Microstructure, Stainless steel",
author = "Tatsuya Nakazawa and Sato, {Yutaka S.} and Hiroyuki Kokawa and Kiyohito Ishida and Toshihiro Omori and Kunihiro Tanaka and Koichi Sakairi",
year = "2015",
doi = "10.1002/9781119093343.ch8",
language = "English",
series = "TMS Annual Meeting",
publisher = "Minerals, Metals and Materials Society",
pages = "77--82",
editor = "Mishra, {Rajiv S.} and Mahoney, {Murray W.} and Yutaka Sato and Yuri Hovanski",
booktitle = "Friction Stir Welding and Processing VIII - Held During TMS 2015 144th Annual Meeting and Exhibition",
address = "United States",
note = "Friction Stir Welding and Processing VIII - TMS 2015 144th Annual Meeting and Exhibition ; Conference date: 15-03-2015 Through 19-03-2015",
}