Microscopic deformation behavior and microstructural evolution in Ti-Nb-Ta-M (M=In, Ag, or Cr) β alloys

W. Xu; M. Calin; K. B. Kim; J. Das; K. Xia; J. Eckert

Microscopic deformation behavior and microstructural evolution in Ti-Nb-Ta-M (M=In, Ag, or Cr) β alloys

W. Xu, M. Calin, K. B. Kim, J. Das, K. Xia, J. Eckert

Research output: Contribution to conference › Paper

Abstract

The microstructural evolution upon compressive loading was identified for metastable Ti-Nb-Ta-M (M=In, Ag, or Cr)β alloys with different phase stability against β→α" martensitic transformation. With increasing degree of deformation, martensitic transformation and deformation twinning are initially operative followed by slip of dislocations for the less stabilized In- and Ag-containing alloys, whereas slip is initially operative followed by fine deformation twinning for the relatively more stable Cr-containing alloy. As a result of the cumulative interactions between slip dislocations, α" martensite and deformation twins, a pronounced grain refinement of the β grains to the nanoscale (50~100 nm) occurs in the In- and Ag-containing alloys with low stacking fault energy. A plausible mechanism is proposed for the easy deformation-induced nanostructuring.

Original language	English
Pages	111-120
Number of pages	10
Publication status	Published - 2010
Externally published	Yes
Event	World Premier International Research Center Advanced Institute for Materials Research Annual Workshop - Miyagi Prefecture, Japan Duration: 1 Mar 2009 → 6 Mar 2009

Workshop

Workshop	World Premier International Research Center Advanced Institute for Materials Research Annual Workshop
City	Miyagi Prefecture, Japan
Period	1/03/09 → 6/03/09

Cite this

@conference{a5b7575b533f4744a610faf4137d652d,

title = "Microscopic deformation behavior and microstructural evolution in Ti-Nb-Ta-M (M=In, Ag, or Cr) β alloys",

abstract = "The microstructural evolution upon compressive loading was identified for metastable Ti-Nb-Ta-M (M=In, Ag, or Cr)β alloys with different phase stability against β→α{"} martensitic transformation. With increasing degree of deformation, martensitic transformation and deformation twinning are initially operative followed by slip of dislocations for the less stabilized In- and Ag-containing alloys, whereas slip is initially operative followed by fine deformation twinning for the relatively more stable Cr-containing alloy. As a result of the cumulative interactions between slip dislocations, α{"} martensite and deformation twins, a pronounced grain refinement of the β grains to the nanoscale (50~100 nm) occurs in the In- and Ag-containing alloys with low stacking fault energy. A plausible mechanism is proposed for the easy deformation-induced nanostructuring.",

author = "W. Xu and M. Calin and Kim, {K. B.} and J. Das and K. Xia and J. Eckert",

year = "2010",

language = "English",

pages = "111--120",

note = "World Premier International Research Center Advanced Institute for Materials Research Annual Workshop ; Conference date: 01-03-2009 Through 06-03-2009",

}

TY - CONF

T1 - Microscopic deformation behavior and microstructural evolution in Ti-Nb-Ta-M (M=In, Ag, or Cr) β alloys

AU - Xu, W.

AU - Calin, M.

AU - Kim, K. B.

AU - Das, J.

AU - Xia, K.

AU - Eckert, J.

PY - 2010

Y1 - 2010

N2 - The microstructural evolution upon compressive loading was identified for metastable Ti-Nb-Ta-M (M=In, Ag, or Cr)β alloys with different phase stability against β→α" martensitic transformation. With increasing degree of deformation, martensitic transformation and deformation twinning are initially operative followed by slip of dislocations for the less stabilized In- and Ag-containing alloys, whereas slip is initially operative followed by fine deformation twinning for the relatively more stable Cr-containing alloy. As a result of the cumulative interactions between slip dislocations, α" martensite and deformation twins, a pronounced grain refinement of the β grains to the nanoscale (50~100 nm) occurs in the In- and Ag-containing alloys with low stacking fault energy. A plausible mechanism is proposed for the easy deformation-induced nanostructuring.

AB - The microstructural evolution upon compressive loading was identified for metastable Ti-Nb-Ta-M (M=In, Ag, or Cr)β alloys with different phase stability against β→α" martensitic transformation. With increasing degree of deformation, martensitic transformation and deformation twinning are initially operative followed by slip of dislocations for the less stabilized In- and Ag-containing alloys, whereas slip is initially operative followed by fine deformation twinning for the relatively more stable Cr-containing alloy. As a result of the cumulative interactions between slip dislocations, α" martensite and deformation twins, a pronounced grain refinement of the β grains to the nanoscale (50~100 nm) occurs in the In- and Ag-containing alloys with low stacking fault energy. A plausible mechanism is proposed for the easy deformation-induced nanostructuring.

M3 - Paper

SP - 111

EP - 120

T2 - World Premier International Research Center Advanced Institute for Materials Research Annual Workshop

Y2 - 1 March 2009 through 6 March 2009

ER -

Microscopic deformation behavior and microstructural evolution in Ti-Nb-Ta-M (M=In, Ag, or Cr) β alloys

Abstract

Workshop

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