scholarly journals ɤ-TiAl alloy: Tensile creep deformation behaviour and creep life at 832 °C

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
Steady State ◽  
Creep Deformation ◽  
Original Work ◽  
Single Phase ◽  
Tial Alloy ◽  
Deformation Behaviour ◽  
Steady State Creep ◽  
Tensile Creep ◽  
Creep Life ◽  
Processing Techniques

Abstract Creep deformation in single phase ɤ-TiAl alloy manufactured using different processing techniques has been an extensively studied topic since the late 1970s. The present work revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase ɤ-TiAl alloy by Hayes and Martin [1] and is aimed to develop an understanding of steady state creep. Besides, it is also aimed to investigate the creep life for stress levels of 69.4 and 103.4 MPa at 832 ⁰C using Monkman-Grant [2] approach.

scholarly journals ɤ-TiAl Alloy: Tensile Creep Deformation Behaviour and Creep Life at 832 °C

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
Steady State ◽  
Creep Deformation ◽  
Original Work ◽  
Single Phase ◽  
Tial Alloy ◽  
Deformation Behaviour ◽  
Steady State Creep ◽  
Tensile Creep ◽  
Creep Life ◽  
Processing Techniques

Creep deformation in single phase ɤ-TiAl alloy manufactured using different processing techniques has been an extensively studied topic since the late 1970s. The present work revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase ɤ-TiAl alloy by Hayes and Martin [1] and is aimed to develop an understanding of steady state creep. Besides, it is also aimed to investigate the creep life for stress levels of 69.4 and 103.4 MPa at 832 ⁰C using Monkman-Grant [2] approach.

scholarly journals A brief discussion on the tensile creep deformation behaviour of wrought single-phase γ-TiAl

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
Strain Rate ◽  
Creep Deformation ◽  
Original Work ◽  
Single Phase ◽  
Tial Alloy ◽  
Deformation Behaviour ◽  
Creep Behaviour ◽  
Tensile Creep ◽  
Tial Alloys ◽  
Processing Techniques

Creep deformation behaviour in single phase γ-TiAl alloy has been an extensively studied topic since the late 1970 s. A lot of literatures have reported creep behaviour of γ-TiAl alloys, manufactured using different processing techniques [1], [2], [3], [4], [5], [6], [7]. The present discussion revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase γ-TiAl alloy by Hayes et al. [8] and is aimed to develop an understanding of steady state creep, through strain vs strain rate and strain vs ln(strain rate) plots. Besides, it also attempts to study the variation of stress exponent with temperature between 760 and 900⁰C and also, to determine activation energies using the two most common approaches, namely: Zener-Hollomon (Z-H) [9] and Sherby-Dorn (S-D, temperature compensated time approach) [10] for stress levels of 69.4 and 103.4 MPa between 760 and 900⁰C.

scholarly journals On the Tensile Creep Deformation Behaviour of Wrought Single-phase γ-TiAl

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
Strain Rate ◽  
Creep Deformation ◽  
Original Work ◽  
Single Phase ◽  
Tial Alloy ◽  
Deformation Behaviour ◽  
Creep Behaviour ◽  
Tensile Creep ◽  
Tial Alloys ◽  
Processing Techniques

Creep deformation behaviour in single phase γ-TiAl alloy has been an extensively studied topic since the late 1970s. A lot of literatures have reported creep behaviour of γ-TiAl alloys, manufactured using different processing techniques [1]–[7]. The present discussion revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase γ-TiAl alloy by Hayes et al. [8] and is aimed to develop an understanding of steady state creep, through strain vs strain rate and strain vs ln(strain rate) plots. Besides, it also attempts to study the variation of stress exponent with temperature between 760-900⁰C and also, to determine activation energies using the two most common approaches, namely: Zener-Hollomon (Z-H) [9] and Sherby-Dorn (S-D, temperature compensated time approach) [10] for stress levels of 69 and 103.4 MPa between 760-900⁰C.

scholarly journals On the tensile creep deformation behaviour of wrought single-phase γ-TiAl

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
Strain Rate ◽  
Creep Deformation ◽  
Original Work ◽  
Single Phase ◽  
Tial Alloy ◽  
Deformation Behaviour ◽  
Creep Behaviour ◽  
Tensile Creep ◽  
Tial Alloys ◽  
Processing Techniques

Abstract Creep deformation behaviour in single phase γ-TiAl alloy has been an extensively studied topic since the late 1970s. A lot of literatures have reported creep behaviour of γ-TiAl alloys, manufactured using different processing techniques [1]–[7]. The present discussion revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase γ-TiAl alloy by Hayes et al. [8] and is aimed to develop an understanding of steady state creep, through strain vs strain rate and strain vs ln(strain rate) plots. Besides, it also attempts to study the variation of stress exponent with temperature between 760–900⁰C and also, to determine activation energies using the two most common approaches, namely: Zener-Hollomon (Z-H) [9] and Sherby-Dorn (S-D, temperature compensated time approach) [10] for stress levels of 69.4 and 103.4 MPa between 760–900⁰C.

scholarly journals ɤ-TiAl alloy: On the tensile creep deformation behaviour and creep life at 832 °C

2021 ◽  
Author(s):  
Mainak Saha
Keyword(s):  
Creep Deformation ◽  
Single Phase ◽  
Tial Alloy ◽  
Deformation Behaviour ◽  
Turbine Blades ◽  
Tensile Creep ◽  
Limited Information ◽  
Creep Life ◽  
Tial Alloys ◽  
Specific Strength

Creep deformation in single-phase ɤ-TiAl alloys manufactured using different processing techniques has been an extensively studied topic owing to the high specific strength and excellent creep properties of these alloys at temperatures between 760 and 1000°C. In addition, these lightweight and creep-resistant alloys are being presently considered as replacements to the comparatively heavier Ni-based superalloys for application in the low-pressure turbine blades of the next-generation gas turbine engines. However, there is limited information on the tensile creep deformation behaviour and creep life of ɤ-TiAl alloys at 832°C where these alloys have been reported not to exhibit steady-state creep. To this end, the present work revisits the work on understanding the tensile creep deformation behaviour of wrought single-phase ɤ-TiAl alloy by Saha [1] and is aimed to develop an understanding of the tensile creep deformation behaviour at 832°C and the influence of creep activation energy on the creep life of wrought single-phase ɤ-TiAl alloy for stress levels of 69.4 and 103.4 MPa at 832°C using Monkman–Grant [2] approach.

Sign in / Sign up

Export Citation Format

Share Document