Improved polycrystalline cubic boron nitride tooling for friction stir welding high temperature alloys
- Nelson T.W. ,
- Sorensen C.D. ,
- Steel R.J. ,
- et al
- Nelson T.W. ,
- Sorensen C.D. ,
- Steel R.J. ,
- Packer S.M. and
- Mahoney M.W.
Repository
Description
A brief review is presented of the state of development of polycrystalline cubic boron nitride (PCBN) tool materials for friction stir welding (FSW) of high-temperature materials (high alloy steels and Ni based alloys) with respect to weld penetration depth and tool life enhancement (wear resistance and fracture toughness). PCBN grades with varying grain size, PCBN content and second phase composition were evaluated by lathe turning tests to assess wear mechanisms and to determine FSW weldability. An MS-80 grade PCBN material was developed and applied to FSW of several steels and Ni-based superalloys. Tool life results are reported for tools used to weld AL6XN super-austenitic stainless steel, A-36, HSLA-65, D2 tool steel and 304L austenitic stainless steel. Pin tool and shoulder tool design issues are discussed.
6th International Symposium, 10-13 Oct 2006, Session 10A: FSW of Steels, Paper 03
Subjects
- Friction welding
- Welding
- Process
- Friction stir welding
- Process equipment
- Friction stir welding tools
- Material
- Ceramics
- Steels
- Ferrous
- High strength steels
- Nonferrous
- Nickel and Ni alloys
- Stainless steels
- Austenitic stainless steels
- Weldability
- Tribological properties
- Properties
- Wear
- Mechanical properties
- Toughness
- Strength
- Microstructure
- Grain
- Fracture
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