In situ observation of deformation-induced interface migration in a fully-lamellar TiAl alloy

1997 ◽  
Vol 36 (9) ◽  
pp. 1017-1022 ◽  
Author(s):  
L Hsiung
Keyword(s):  
Tial Alloy ◽  
In Situ Observation ◽  
Interface Migration ◽  
Fully Lamellar

BEHAVIOR OF PLASTIC DEFORMATION AND CRACK PROPAGATION ON FULLY LAMELLAR GAMMA-TiAl ALLOY

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2958-2963
Author(s):  
MING SONG ◽  
GUANGJIE MAO ◽  
YUE MA ◽  
SHENGKAI GONG
Keyword(s):  
Plastic Deformation ◽  
Plastic Zone ◽  
Strain Field ◽  
Tial Alloy ◽  
Image Correlation ◽  
Deformation Region ◽  
Order Of Magnitude ◽  
Plastic Deformation Region ◽  
Fully Lamellar

Practical residual strain field around the microcrack tip of fully lamellar γ- TiAl alloy was estimate the by digital image correlation (DIC) technology with in-situ SEM observation. And the macro plastic deformation before fracture of such low ductility alloys was observed. The results showed that the size of plastic zone around microcrack tip was 2 ~ 10µ m which was much more smaller than the calculated value by fracture mechanics. During the magnified observation on the plastic deformation region, a series of microcracks were observed in the specimen without macro cracking. Furthermore, the size of distribution region of the microcracks were in the same order of magnitude with the calculated plastic zone near primary crack tip which just reflected the comprehensive effect of microcracks and the plastic deformation on the tips of them.

scholarly journals In situ fracture observations of distinct interface types within a fully lamellar intermetallic TiAl alloy

2021 ◽  
Author(s):  
Michael Burtscher ◽  
Markus Alfreider ◽  
Klemens Schmuck ◽  
Helmut Clemens ◽  
Svea Mayer ◽  
...  
Keyword(s):  
Tial Alloy ◽  
Fully Lamellar

scholarly journals In situ fracture observations of distinct interface types within a fully lamellar intermetallic TiAl alloy

2020 ◽  
pp. 1-14
Author(s):  
Michael Burtscher ◽  
Markus Alfreider ◽  
Klemens Schmuck ◽  
Helmut Clemens ◽  
Svea Mayer ◽  
...  
Keyword(s):  
Tial Alloy ◽  
Fully Lamellar

Abstract

In-Situ Observation of Microcracking in a Tial-Cr-V Alloy Under Compressive Stress

1994 ◽  
Vol 364 ◽  
Author(s):  
Z. J. Pu ◽  
Y. Q. Liu ◽  
K. H. Wu
Keyword(s):  
Grain Boundaries ◽  
Compressive Stress ◽  
Lamellar Microstructure ◽  
Compressive Deformation ◽  
In Situ Observation ◽  
Duplex Structure ◽  
Entire Process ◽  
Fully Lamellar ◽  
Electronic Microscope

AbstractThe entire process of microcrack nucleation in a TiAl-Cr-V alloy with different microstructures is observed in situ by a scanning electronic microscope (SEM) during compressive deformation. The main results are summarized as follows: (1) In the fully lamellar microstructure, the microcracks nucleate mainly at the lamellar grain boundaries between soft-orientation and hard-orientation grains. (2) In the Widmanstatten structure, the microcracks distribute mainly at the intersection between two Widmanstatten plates. (3) In the duplex structure, the microcracks form at the lamella/ lamella and lamella/gamma boundaries. (4) In the nearly gamma structure, microcracks nucleate at gamma/gamma grain boundaries.

The fracture mechanism of a fully lamellar γ-TiAl alloy through in-situ SEM observation

2000 ◽  
Vol 8 (12) ◽  
pp. 1443-1445 ◽  
Author(s):  
Y.H. Lu ◽  
Y.G. Zhang ◽  
L.J. Qiao ◽  
Y.B. Wang ◽  
C.Q. Chen ◽  
...  
Keyword(s):  
Fracture Mechanism ◽  
Tial Alloy ◽  
Sem Observation ◽  
Fully Lamellar

In situ observation of austenite–ferrite interface migration in a lean Mn steel during cyclic partial phase transformations

2013 ◽  
Vol 61 (7) ◽  
pp. 2414-2424 ◽  
Author(s):  
Hao Chen ◽  
Ernst Gamsjäger ◽  
Siegfried Schider ◽  
Hamideh Khanbareh ◽  
Sybrand van der Zwaag
Keyword(s):  
Phase Transformations ◽  
In Situ Observation ◽  
Interface Migration ◽  
Partial Phase ◽  
Mn Steel
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