Analysis on the deformation and fracture behavior of carbon steel by in situ tensile test

Author(s):  
Fan Li ◽  
Haibo Huang
2004 ◽  
Vol 12 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Y. Wu ◽  
L. Zhen ◽  
D.Z. Yang ◽  
M.S. Kim ◽  
S.K. Hwang ◽  
...  

JOM ◽  
2018 ◽  
Vol 70 (5) ◽  
pp. 700-705 ◽  
Author(s):  
Zheng-zhi Zhao ◽  
Rong-hua Cao ◽  
Ju-hua Liang ◽  
Feng Li ◽  
Cheng Li ◽  
...  

2010 ◽  
Vol 35 (4) ◽  
pp. 1829-1838 ◽  
Author(s):  
B.G. Yuan ◽  
H.P. Yu ◽  
C.F. Li ◽  
D.L. Sun

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3380
Author(s):  
Minglang Luo ◽  
Tingyi Lin ◽  
Lei Zhou ◽  
Wei Li ◽  
Yilong Liang ◽  
...  

The tensile deformation and fracture behavior of a particular semi-equiaxed microstructure (S-EM) in a near alpha titanium alloy TA19 are investigated by an in situ method. In the S-EM, the thin β lamellae grow through the equiaxed αp phase (αp), and the original αp/βtrans interface in the bimodal microstructure largely disappears, forming a blurry interface between the semi-equiaxed αp phase (equiaxed αp phase that is grew through by the thin β lamellae) and the transformed β microstructure (βtrans). The formation of dense slip bands inside the semi-equiaxed αp phase in the S-EM is inhibited by the thin β lamellae during the tensile deformation. The special characteristics of the S-EM reduce the stress concentration at the interface, and the crack initiation probability in the blurry semi-αp/βtrans interface decreased compared to the distinct αp/βtrans interface in a conventional equiaxed microstructure (EM). Moreover, the ultimate tensile strength of the S-EM is higher than that of the EM with a slight loss of plasticity.


2016 ◽  
Vol 674 ◽  
pp. 165-172
Author(s):  
Michael Besterci ◽  
Štefan Nagy ◽  
Song Jeng Huang ◽  
Oksana Velgosová ◽  
Katarína Sülleiová ◽  
...  

In situ observation of AZ61 Mg alloy with 5 wt. % of Al2O3 in the SEM was performed to study influence of the weight fraction of Al2O3 particles on the deformation and fracture description during the tensile test. Structure of the experimental materials was also analysed; microstructures were heterogeneous, with randomly distributed globular Al2O3 particles (average diameter of 25 nm) and Mg17Al12 intermetallic phase (average diameter of 0.4 mm). It was shown that during the tensile deformation the failure of Mg17Al12 particles and decohesion of the matrix-Al2O3 particles interphase boundary started simultaneously. Decohesion resulted from the different physical properties of matrix and Al2O3 particles. The influence of the Al2O3 weight fraction on the final fracture was evident; for the material with 5 wt. % of Al2O3, the fracture surface was approximately perpendicular to the loading direction. The fracture surface had transcrystalline ductile character.


2007 ◽  
Vol 345-346 ◽  
pp. 611-618
Author(s):  
Kwai S. Chan

The fracture behavior of Nb-based in-situ composites is reviewed to elucidate the effects of alloy additions on the fracture process in multiphase alloys. The overview paper summarizes the current understanding of the processes by which alloying addition and microstructure alter the near-tip deformation and fracture mechanism, and presents a methodology for predicting the fracture toughness of the constituent phases and the composite. The alloying effects observed in Nb-based in-situ composites can be attributed to changes in dislocation mobility in the metallic solid solution matrix that provides ductile phase toughening in the composites. The size, volume fraction, and the continuity of the intermetallic phases dictate the fracture path and impact significantly the facture toughness of the in-situ composites.


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