High through-put nanoindentation mapping and indentation creep behavior of P-TIG welded CpTi and Inconel 718 using a Nb-interlayer

Tauheed Shehbaz; Fahd Nawaz Khan; Massab Junaid; Balaji Aresh

doi:10.1016/j.mtcomm.2022.104994

High through-put nanoindentation mapping and indentation creep behavior of P-TIG welded CpTi and Inconel 718 using a Nb-interlayer

Tauheed Shehbaz, Fahd Nawaz Khan^*, Massab Junaid, Balaji Aresh

^*Corresponding author for this work

School of Computing, Engineering and Physical Sciences

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

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Abstract

The high-speed correlative study of the local mechanical properties and indentation creep of different zones of the P-TIG welded CpTi (Commercially pure Ti) and IN718, with Nb as an interlayer has been studied. The results showed contrasting mechanical properties (nanohardness and elastic moduli) to a width of 35 µm and 60 µm at the Nb/CpTi and the Nb/IN718 interfaces with hardness of ∼9 GPa and ∼15 Gpa, respectively. This was owing to the strengthening of the interfaces due to the interdiffusion of Nb into the base alloys. The Nb/IN718 and Nb/CpTi interfaces, exhibited significantly higher resistance to creep deformation than the Nb-Interlayer. The stress exponent at the Nb/CpTi interface and in different zones of Nb/IN718 side indicated dislocation climb as the creep deformation mechanism.

Original language	English
Article number	104994
Journal	Materials Today Communications
Volume	33
Early online date	24 Nov 2022
DOIs	https://doi.org/10.1016/j.mtcomm.2022.104994
Publication status	Published - 31 Dec 2022

Keywords

creep
hardness
indentation
mechanical properties mapping
welding

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10.1016/j.mtcomm.2022.104994

2022 11 21 Shehbaz etal nanoindentationAccepted author manuscript, 1.46 MBLicence: CC BY-NC-ND

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title = "High through-put nanoindentation mapping and indentation creep behavior of P-TIG welded CpTi and Inconel 718 using a Nb-interlayer",

abstract = "The high-speed correlative study of the local mechanical properties and indentation creep of different zones of the P-TIG welded CpTi (Commercially pure Ti) and IN718, with Nb as an interlayer has been studied. The results showed contrasting mechanical properties (nanohardness and elastic moduli) to a width of 35 µm and 60 µm at the Nb/CpTi and the Nb/IN718 interfaces with hardness of ∼9 GPa and ∼15 Gpa, respectively. This was owing to the strengthening of the interfaces due to the interdiffusion of Nb into the base alloys. The Nb/IN718 and Nb/CpTi interfaces, exhibited significantly higher resistance to creep deformation than the Nb-Interlayer. The stress exponent at the Nb/CpTi interface and in different zones of Nb/IN718 side indicated dislocation climb as the creep deformation mechanism.",

keywords = "creep, hardness, indentation, mechanical properties mapping, welding",

author = "Tauheed Shehbaz and Khan, {Fahd Nawaz} and Massab Junaid and Balaji Aresh",

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doi = "10.1016/j.mtcomm.2022.104994",

language = "English",

volume = "33",

journal = "Materials Today Communications",

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T1 - High through-put nanoindentation mapping and indentation creep behavior of P-TIG welded CpTi and Inconel 718 using a Nb-interlayer

AU - Shehbaz, Tauheed

AU - Khan, Fahd Nawaz

AU - Junaid, Massab

AU - Aresh, Balaji

PY - 2022/12/31

Y1 - 2022/12/31

N2 - The high-speed correlative study of the local mechanical properties and indentation creep of different zones of the P-TIG welded CpTi (Commercially pure Ti) and IN718, with Nb as an interlayer has been studied. The results showed contrasting mechanical properties (nanohardness and elastic moduli) to a width of 35 µm and 60 µm at the Nb/CpTi and the Nb/IN718 interfaces with hardness of ∼9 GPa and ∼15 Gpa, respectively. This was owing to the strengthening of the interfaces due to the interdiffusion of Nb into the base alloys. The Nb/IN718 and Nb/CpTi interfaces, exhibited significantly higher resistance to creep deformation than the Nb-Interlayer. The stress exponent at the Nb/CpTi interface and in different zones of Nb/IN718 side indicated dislocation climb as the creep deformation mechanism.

AB - The high-speed correlative study of the local mechanical properties and indentation creep of different zones of the P-TIG welded CpTi (Commercially pure Ti) and IN718, with Nb as an interlayer has been studied. The results showed contrasting mechanical properties (nanohardness and elastic moduli) to a width of 35 µm and 60 µm at the Nb/CpTi and the Nb/IN718 interfaces with hardness of ∼9 GPa and ∼15 Gpa, respectively. This was owing to the strengthening of the interfaces due to the interdiffusion of Nb into the base alloys. The Nb/IN718 and Nb/CpTi interfaces, exhibited significantly higher resistance to creep deformation than the Nb-Interlayer. The stress exponent at the Nb/CpTi interface and in different zones of Nb/IN718 side indicated dislocation climb as the creep deformation mechanism.

KW - creep

KW - hardness

KW - indentation

KW - mechanical properties mapping

KW - welding

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DO - 10.1016/j.mtcomm.2022.104994

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SN - 2352-4928

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JO - Materials Today Communications

JF - Materials Today Communications

M1 - 104994

ER -

High through-put nanoindentation mapping and indentation creep behavior of P-TIG welded CpTi and Inconel 718 using a Nb-interlayer

Abstract

Keywords

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