Nickel diffusion treatment of Timetal 550 titanium alloy

C. Kwietniewski; H. Dong; A. Bloyce; T. Bell

doi:10.1179/026708499101516759

Nickel diffusion treatment of Timetal 550 titanium alloy

C. Kwietniewski^*, H. Dong, A. Bloyce, T. Bell

^*Corresponding author for this work

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A series of nickel diffusion treatments have been carried out on Timetal 550 titanium alloy at temperatures ranging from 650 to 900 °C in order to achieve deep case hardening. Systematic characterization of the nickel diffusion treated surface layers was performed using GDS, XRD, EDS, SEM, and optical microscopy. Microhardness and compositional profiles have been carried out in order to reveal the hardening effect and the nickel penetration. The sliding wear resistance against hardened 709M40 steel was evaluated using an Amsler wear tester. The results have shown that by choosing proper treatment parameters, different combinations of intermetallics from the system Ti-Ni can be formed in a selective manner. In addition, with specific conditions it is possible to form diffusion zones without intermetallics on the surface. Finally, a significant improvement in the sliding wear resistance was observed for treated specimens under unlubricated and lightly loaded conditions.

Original language	English
Pages (from-to)	385-390
Number of pages	6
Journal	Surface Engineering
Volume	15
Issue number	5
DOIs	https://doi.org/10.1179/026708499101516759
Publication status	Published - 1999

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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title = "Nickel diffusion treatment of Timetal 550 titanium alloy",

abstract = "A series of nickel diffusion treatments have been carried out on Timetal 550 titanium alloy at temperatures ranging from 650 to 900 °C in order to achieve deep case hardening. Systematic characterization of the nickel diffusion treated surface layers was performed using GDS, XRD, EDS, SEM, and optical microscopy. Microhardness and compositional profiles have been carried out in order to reveal the hardening effect and the nickel penetration. The sliding wear resistance against hardened 709M40 steel was evaluated using an Amsler wear tester. The results have shown that by choosing proper treatment parameters, different combinations of intermetallics from the system Ti-Ni can be formed in a selective manner. In addition, with specific conditions it is possible to form diffusion zones without intermetallics on the surface. Finally, a significant improvement in the sliding wear resistance was observed for treated specimens under unlubricated and lightly loaded conditions.",

author = "C. Kwietniewski and H. Dong and A. Bloyce and T. Bell",

year = "1999",

doi = "10.1179/026708499101516759",

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volume = "15",

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journal = "Surface Engineering",

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TY - JOUR

T1 - Nickel diffusion treatment of Timetal 550 titanium alloy

AU - Kwietniewski, C.

AU - Dong, H.

AU - Bloyce, A.

AU - Bell, T.

PY - 1999

Y1 - 1999

N2 - A series of nickel diffusion treatments have been carried out on Timetal 550 titanium alloy at temperatures ranging from 650 to 900 °C in order to achieve deep case hardening. Systematic characterization of the nickel diffusion treated surface layers was performed using GDS, XRD, EDS, SEM, and optical microscopy. Microhardness and compositional profiles have been carried out in order to reveal the hardening effect and the nickel penetration. The sliding wear resistance against hardened 709M40 steel was evaluated using an Amsler wear tester. The results have shown that by choosing proper treatment parameters, different combinations of intermetallics from the system Ti-Ni can be formed in a selective manner. In addition, with specific conditions it is possible to form diffusion zones without intermetallics on the surface. Finally, a significant improvement in the sliding wear resistance was observed for treated specimens under unlubricated and lightly loaded conditions.

AB - A series of nickel diffusion treatments have been carried out on Timetal 550 titanium alloy at temperatures ranging from 650 to 900 °C in order to achieve deep case hardening. Systematic characterization of the nickel diffusion treated surface layers was performed using GDS, XRD, EDS, SEM, and optical microscopy. Microhardness and compositional profiles have been carried out in order to reveal the hardening effect and the nickel penetration. The sliding wear resistance against hardened 709M40 steel was evaluated using an Amsler wear tester. The results have shown that by choosing proper treatment parameters, different combinations of intermetallics from the system Ti-Ni can be formed in a selective manner. In addition, with specific conditions it is possible to form diffusion zones without intermetallics on the surface. Finally, a significant improvement in the sliding wear resistance was observed for treated specimens under unlubricated and lightly loaded conditions.

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DO - 10.1179/026708499101516759

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VL - 15

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EP - 390

JO - Surface Engineering

JF - Surface Engineering

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Nickel diffusion treatment of Timetal 550 titanium alloy

Abstract

ASJC Scopus subject areas

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