Mechanical properties and fracture behavior of titanium-aluminum/titanium micro-laminate sheet deposited by EB-PVD

Gu Ping Wang; Li Ma; Meng Xian Zhang

doi:10.2320/matertrans.M2015176

Mechanical properties and fracture behavior of titanium-aluminum/titanium micro-laminate sheet deposited by EB-PVD

Gu Ping Wang^*
, Li Ma
, Meng Xian Zhang

^*Corresponding author for this work

TaiZhou University
Guangdong University of Petrochemical Technology

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

3 Scopus citations

Abstract

A 110μm thick micro-laminate sheet comprising 14 layers of TiAl/Ti₃Al two phase compound and 15 layers of Ti was prepared by electron beam physical vapor deposition (EB-PVD), and its microstructures and mechanical properties were characterized. Results show that the hardness of interfacial region is about 7.029 GPa, higher than that of either component layer. After densification, room-temperature tensile strength and elongation are improved compared to single Ti-Al compound sample, reaching 656.89MPa and 2.92%, respectively. Its tensile curve presents a distinct jagged feature. High-temperature tensile strength exhibits an abnormal increase with temperature, exceeding 440 MPa at 1023 K. The presence of Ti layers will lead to cracks stagger along the inter-laminar interface or the crack deflection and the micro-bridge connection caused by Ti layers, due to the TiAl-Ti₃Al/α-Ti micro-laminate displaying a fine characteristic of delayed fracture.

Original language	English
Pages (from-to)	1764-1770
Number of pages	7
Journal	Materials Transactions
Volume	56
Issue number	11
DOIs	https://doi.org/10.2320/matertrans.M2015176
State	Published - 2015
Externally published	Yes

Keywords

Electron beam physical vapor deposition
Mechanical properties
Micro laminated sheet
Toughening

Access to Document

10.2320/matertrans.M2015176

Cite this

@article{1a38277d0d46444f9878ba0950149013,

title = "Mechanical properties and fracture behavior of titanium-aluminum/titanium micro-laminate sheet deposited by EB-PVD",

abstract = "A 110μm thick micro-laminate sheet comprising 14 layers of TiAl/Ti3Al two phase compound and 15 layers of Ti was prepared by electron beam physical vapor deposition (EB-PVD), and its microstructures and mechanical properties were characterized. Results show that the hardness of interfacial region is about 7.029 GPa, higher than that of either component layer. After densification, room-temperature tensile strength and elongation are improved compared to single Ti-Al compound sample, reaching 656.89MPa and 2.92\%, respectively. Its tensile curve presents a distinct jagged feature. High-temperature tensile strength exhibits an abnormal increase with temperature, exceeding 440 MPa at 1023 K. The presence of Ti layers will lead to cracks stagger along the inter-laminar interface or the crack deflection and the micro-bridge connection caused by Ti layers, due to the TiAl-Ti3Al/α-Ti micro-laminate displaying a fine characteristic of delayed fracture.",

keywords = "Electron beam physical vapor deposition, Mechanical properties, Micro laminated sheet, Toughening",

author = "Wang, \{Gu Ping\} and Li Ma and Zhang, \{Meng Xian\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Japan Institute of Metals and Materials.",

year = "2015",

doi = "10.2320/matertrans.M2015176",

language = "英语",

volume = "56",

pages = "1764--1770",

journal = "Materials Transactions",

issn = "1345-9678",

publisher = "Japan Institute of Metals (JIM)",

number = "11",

}

TY - JOUR

T1 - Mechanical properties and fracture behavior of titanium-aluminum/titanium micro-laminate sheet deposited by EB-PVD

AU - Wang, Gu Ping

AU - Ma, Li

AU - Zhang, Meng Xian

PY - 2015

Y1 - 2015

N2 - A 110μm thick micro-laminate sheet comprising 14 layers of TiAl/Ti3Al two phase compound and 15 layers of Ti was prepared by electron beam physical vapor deposition (EB-PVD), and its microstructures and mechanical properties were characterized. Results show that the hardness of interfacial region is about 7.029 GPa, higher than that of either component layer. After densification, room-temperature tensile strength and elongation are improved compared to single Ti-Al compound sample, reaching 656.89MPa and 2.92%, respectively. Its tensile curve presents a distinct jagged feature. High-temperature tensile strength exhibits an abnormal increase with temperature, exceeding 440 MPa at 1023 K. The presence of Ti layers will lead to cracks stagger along the inter-laminar interface or the crack deflection and the micro-bridge connection caused by Ti layers, due to the TiAl-Ti3Al/α-Ti micro-laminate displaying a fine characteristic of delayed fracture.

AB - A 110μm thick micro-laminate sheet comprising 14 layers of TiAl/Ti3Al two phase compound and 15 layers of Ti was prepared by electron beam physical vapor deposition (EB-PVD), and its microstructures and mechanical properties were characterized. Results show that the hardness of interfacial region is about 7.029 GPa, higher than that of either component layer. After densification, room-temperature tensile strength and elongation are improved compared to single Ti-Al compound sample, reaching 656.89MPa and 2.92%, respectively. Its tensile curve presents a distinct jagged feature. High-temperature tensile strength exhibits an abnormal increase with temperature, exceeding 440 MPa at 1023 K. The presence of Ti layers will lead to cracks stagger along the inter-laminar interface or the crack deflection and the micro-bridge connection caused by Ti layers, due to the TiAl-Ti3Al/α-Ti micro-laminate displaying a fine characteristic of delayed fracture.

KW - Electron beam physical vapor deposition

KW - Mechanical properties

KW - Micro laminated sheet

KW - Toughening

UR - https://www.scopus.com/pages/publications/84945552841

U2 - 10.2320/matertrans.M2015176

DO - 10.2320/matertrans.M2015176

M3 - 文章

AN - SCOPUS:84945552841

SN - 1345-9678

VL - 56

SP - 1764

EP - 1770

JO - Materials Transactions

JF - Materials Transactions

IS - 11

ER -

Mechanical properties and fracture behavior of titanium-aluminum/titanium micro-laminate sheet deposited by EB-PVD

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this