Effects of severe plastic deformation on grain refinement and martensitic transformation in a metastable β Ti alloy

A. Zafari; X. S. Wei; W. Xu; K. Xia

doi:10.1088/1757-899X/89/1/012055

Effects of severe plastic deformation on grain refinement and martensitic transformation in a metastable β Ti alloy

A. Zafari, X. S. Wei, W. Xu, K. Xia

School of Engineering

Research output: Contribution to journal › Conference paper

5 Citations (Scopus)

42 Downloads (Pure)

Abstract

A Ti-5553 metastable β alloy was subjected to high pressure torsion (HPT) to obtain a nano β grain structure. The β grains were dramatically refined from an initial size of ∼1 mm to < 50 nm during HPT. The stress induced martensitic α plates divided β grains into smaller domains and enabled subgrains to form even in very fine grains. The reverse α to β transformation occurred when the thickness of the α laths reached < ∼10 nm, leading to pure β nano-grains. Further deformation to an equivalent strain of 242 resulted in grain growth and the formation of well defined grain boundaries.

Original language	English
Article number	012055
Number of pages	7
Journal	IOP Conference Series: Materials Science and Engineering
Volume	89
DOIs	https://doi.org/10.1088/1757-899X/89/1/012055
Publication status	Published - 2015
Event	International Symposium on Materials Science (36th : 2015) - Risø, Denmark Duration: 7 Sep 2015 → 11 Sep 2015 Conference number: 36th

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Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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title = "Effects of severe plastic deformation on grain refinement and martensitic transformation in a metastable β Ti alloy",

abstract = "A Ti-5553 metastable β alloy was subjected to high pressure torsion (HPT) to obtain a nano β grain structure. The β grains were dramatically refined from an initial size of ∼1 mm to < 50 nm during HPT. The stress induced martensitic α plates divided β grains into smaller domains and enabled subgrains to form even in very fine grains. The reverse α to β transformation occurred when the thickness of the α laths reached < ∼10 nm, leading to pure β nano-grains. Further deformation to an equivalent strain of 242 resulted in grain growth and the formation of well defined grain boundaries.",

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AU - Zafari, A.

AU - Wei, X. S.

AU - Xu, W.

AU - Xia, K.

N1 - Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2015

Y1 - 2015

N2 - A Ti-5553 metastable β alloy was subjected to high pressure torsion (HPT) to obtain a nano β grain structure. The β grains were dramatically refined from an initial size of ∼1 mm to < 50 nm during HPT. The stress induced martensitic α plates divided β grains into smaller domains and enabled subgrains to form even in very fine grains. The reverse α to β transformation occurred when the thickness of the α laths reached < ∼10 nm, leading to pure β nano-grains. Further deformation to an equivalent strain of 242 resulted in grain growth and the formation of well defined grain boundaries.

AB - A Ti-5553 metastable β alloy was subjected to high pressure torsion (HPT) to obtain a nano β grain structure. The β grains were dramatically refined from an initial size of ∼1 mm to < 50 nm during HPT. The stress induced martensitic α plates divided β grains into smaller domains and enabled subgrains to form even in very fine grains. The reverse α to β transformation occurred when the thickness of the α laths reached < ∼10 nm, leading to pure β nano-grains. Further deformation to an equivalent strain of 242 resulted in grain growth and the formation of well defined grain boundaries.

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U2 - 10.1088/1757-899X/89/1/012055

DO - 10.1088/1757-899X/89/1/012055

M3 - Conference paper

VL - 89

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-8981

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