Failure and deformation behaviors of electron beam weldment of titanium alloy Ti-60 at elevated temperature

Zhiyong Chen; Qingjiang Wang; Jianrong Liu; Yulan Li; Rui Yang; Jinwei Li; Fangjun Liu

Failure and deformation behaviors of electron beam weldment of titanium alloy Ti-60 at elevated temperature

Zhiyong Chen^*
, Qingjiang Wang
, Jianrong Liu
, Yulan Li
, Rui Yang
, Jinwei Li
, Fangjun Liu

^*Corresponding author for this work

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

8 Scopus citations

Abstract

The failure location of the 600°C tensile specimens of EBW weldment of Ti-60 alloy was found to be in the base metal (BM) region, which was attributed to the superior anti-deformabilities of fusion zone (FZ) and heat-affected zone (HAZ) during tensile testing. The creep rupture property at 600°C was found to be related to the level of creep stress applied: The fracture location shifted from FZ to BM region when the applied stress reached 550 MPa, at or above which the deformation mechanism changed from dislocation climbing to dislocation slipping. Fatigue cracks at 600°C fatigue test were found to initiate at the surface or sub-surface of the specimen at BM region, TEM observation revealed that the deformation in BM region is mainly caused by dislocation gliding through α-phase laths, while the deformation in FZ is caused by dislocation climbing and limited dislocation slipping within the laths.

Original language	English
Pages (from-to)	263-271
Number of pages	9
Journal	Jinshu Xuebao/Acta Metallurgica Sinica
Volume	44
Issue number	3
State	Published - Mar 2008
Externally published	Yes

Keywords

Deformation behavior
Electron beam welding (EBW)
Fracture feature
High temperature mechanical property
High temperature titanium alloy

Cite this

@article{8280c519ae0d487483a03a434e192a52,

title = "Failure and deformation behaviors of electron beam weldment of titanium alloy Ti-60 at elevated temperature",

abstract = "The failure location of the 600°C tensile specimens of EBW weldment of Ti-60 alloy was found to be in the base metal (BM) region, which was attributed to the superior anti-deformabilities of fusion zone (FZ) and heat-affected zone (HAZ) during tensile testing. The creep rupture property at 600°C was found to be related to the level of creep stress applied: The fracture location shifted from FZ to BM region when the applied stress reached 550 MPa, at or above which the deformation mechanism changed from dislocation climbing to dislocation slipping. Fatigue cracks at 600°C fatigue test were found to initiate at the surface or sub-surface of the specimen at BM region, TEM observation revealed that the deformation in BM region is mainly caused by dislocation gliding through α-phase laths, while the deformation in FZ is caused by dislocation climbing and limited dislocation slipping within the laths.",

keywords = "Deformation behavior, Electron beam welding (EBW), Fracture feature, High temperature mechanical property, High temperature titanium alloy",

author = "Zhiyong Chen and Qingjiang Wang and Jianrong Liu and Yulan Li and Rui Yang and Jinwei Li and Fangjun Liu",

year = "2008",

month = mar,

language = "英语",

volume = "44",

pages = "263--271",

journal = "Jinshu Xuebao/Acta Metallurgica Sinica",

issn = "0412-1961",

publisher = "Chinese Academy of Sciences",

number = "3",

}

TY - JOUR

T1 - Failure and deformation behaviors of electron beam weldment of titanium alloy Ti-60 at elevated temperature

AU - Chen, Zhiyong

AU - Wang, Qingjiang

AU - Liu, Jianrong

AU - Li, Yulan

AU - Yang, Rui

AU - Li, Jinwei

AU - Liu, Fangjun

PY - 2008/3

Y1 - 2008/3

N2 - The failure location of the 600°C tensile specimens of EBW weldment of Ti-60 alloy was found to be in the base metal (BM) region, which was attributed to the superior anti-deformabilities of fusion zone (FZ) and heat-affected zone (HAZ) during tensile testing. The creep rupture property at 600°C was found to be related to the level of creep stress applied: The fracture location shifted from FZ to BM region when the applied stress reached 550 MPa, at or above which the deformation mechanism changed from dislocation climbing to dislocation slipping. Fatigue cracks at 600°C fatigue test were found to initiate at the surface or sub-surface of the specimen at BM region, TEM observation revealed that the deformation in BM region is mainly caused by dislocation gliding through α-phase laths, while the deformation in FZ is caused by dislocation climbing and limited dislocation slipping within the laths.

AB - The failure location of the 600°C tensile specimens of EBW weldment of Ti-60 alloy was found to be in the base metal (BM) region, which was attributed to the superior anti-deformabilities of fusion zone (FZ) and heat-affected zone (HAZ) during tensile testing. The creep rupture property at 600°C was found to be related to the level of creep stress applied: The fracture location shifted from FZ to BM region when the applied stress reached 550 MPa, at or above which the deformation mechanism changed from dislocation climbing to dislocation slipping. Fatigue cracks at 600°C fatigue test were found to initiate at the surface or sub-surface of the specimen at BM region, TEM observation revealed that the deformation in BM region is mainly caused by dislocation gliding through α-phase laths, while the deformation in FZ is caused by dislocation climbing and limited dislocation slipping within the laths.

KW - Deformation behavior

KW - Electron beam welding (EBW)

KW - Fracture feature

KW - High temperature mechanical property

KW - High temperature titanium alloy

UR - https://www.scopus.com/pages/publications/41949114530

M3 - 文章

AN - SCOPUS:41949114530

SN - 0412-1961

VL - 44

SP - 263

EP - 271

JO - Jinshu Xuebao/Acta Metallurgica Sinica

JF - Jinshu Xuebao/Acta Metallurgica Sinica

IS - 3

ER -

Failure and deformation behaviors of electron beam weldment of titanium alloy Ti-60 at elevated temperature

Abstract

Keywords

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