Fatigue crack initiation and crystallographic crack growth in an austenitic stainless steel

2000 ◽  
Vol 19 (1-4) ◽  
pp. 87-96 ◽  
Author(s):  
C Chauvot ◽  
M Sester
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Austenitic Stainless Steel ◽  
Crack Initiation ◽  
Crack Growth ◽  
Fatigue Crack Initiation

scholarly journals Toward consistent fatigue crack initiation criteria for 304L austenitic stainless steel under multi-axial loads

2015 ◽  
Vol 75 ◽  
pp. 57-68 ◽  
Author(s):  
Bai-Mao Lei ◽  
Van-Xuan Tran ◽  
Saïd Taheri ◽  
Jean-Christophe le Roux ◽  
François Curtit ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Austenitic Stainless Steel ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Axial Loads

Fatigue Crack Initiation and Growth Behaviour of 316L Stainless Steel Manufactured Through Selective Laser Melting

2017 ◽  
Author(s):  
C. M. Davies ◽  
H. Thomlinson ◽  
P. A. Hooper
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Initiation ◽  
Crack Growth ◽  
316L Stainless Steel ◽  
Fatigue Crack Initiation ◽  
Compact Tension ◽  
Growth Behaviour ◽  
Laser Melting

Selective Laser Melting (SLM) is a relatively new manufacturing technique that offers many benefits. However the utilisation of SLM manufactured components depends on the assurance of their integrity during operation. Tensile and high cycle fatigue tests have been performed on uniaxial samples manufactured using SLM of 316L stainless steel to examine the elastic-plastic deformation and fatigue crack initiation behaviour of the material. In addition, the fatigue crack growth behaviour has been determined from tests on compact tension samples manufactured using SLM. The influence of build orientation has been examined on the compact tension samples. The results are compared to values obtained from conventional manufacturing methods. The tensile samples have a higher strength but significantly lower ductility than wrought material. The fatigue strength of the SLM material was substantially less than wrought material, though a similar fatigue limit maybe seen, this may be attributed to porosity in the material. The fatigue crack growth rate of the SLM material was 5–10 times faster, for a given stress intensity factor, than wrought materials and strongly depended on crack orientation in relation to the build direction.

scholarly journals Shape of a crack growth front under fatigue in the range of 106 - 107cycles

2020 ◽  
Vol 4 (1) ◽  
pp. 30-39
Author(s):  
Georgi Georgiev Georgiev
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Initiation ◽  
Crack Growth ◽  
Fatigue Crack Initiation ◽  
Growth Front ◽  
Physical Endurance ◽  
Similar Materials ◽  
3D Computer Model

The paper explores the shape of a fatigue crack initiation in the interval of 106-107cycles of duplex stainless steel, commercially designated as SAF 2507. Particular emphasis is placed upon the development of the crack’s growth front and its subsequent expansion in three directions x, y, z. Created, accordingly, on the basis of the experimentally obtained results, is a 3D computer model to help provide a further prediction for the physical endurance of similar materials. The growth of a fatigue crack is modeled by using The SolidWorks and AutoCAD software tools for constructing the model of fatigue crack growth.

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