Effect of heat treatment on tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy

2017 ◽  
Vol 705 ◽  
pp. 402-410 ◽  
Author(s):  
Quan Wang ◽  
Lv Xiao ◽  
Wencai Liu ◽  
Haohao Zhang ◽  
Wendong Cui ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Impact Toughness ◽  
Tensile Properties ◽  
Plane Strain ◽  
Plane Strain Fracture Toughness ◽  
Sand Cast ◽  
Strain Fracture

Critical Stress Intensity Factor Determination for AZ61 Magnesium Alloy

2011 ◽  
Vol 462-463 ◽  
pp. 1121-1126
Author(s):  
M.A.M. Daud ◽  
Zainuddin Sajuri ◽  
Mohd Zaidi Omar ◽  
Junaidi Syarif
Keyword(s):  
Fracture Toughness ◽  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Magnesium Alloy ◽  
Intensity Factor ◽  
Plane Strain ◽  
Specimen Thickness ◽  
Plane Strain Fracture Toughness ◽  
Az61 Magnesium Alloy ◽  
Strain Fracture

A stress intensity factor K was used as a fracture parameter to determine the plane strain fracture toughness KIC of AZ61 magnesium alloy using a single edge notch bend (SENB) specimen in accordance to ASTM E399 testing method. Five different specimen thicknesses of 2 to 10 mm were used in the test. A sharp fatigue pre-crack was initiated and propagated to half of specimen width at a constant crack propagation rate of about 1 x 10-8 m/cycle before the specimen was loaded in tension until the fracture stress is reached and then rapid fracture occurred. The fracture toughness KC values obtained for different thicknesses showed that KC value decreased with increasing specimen thickness. The highest KC value obtained was 16.5 MPa√m for 2 mm thickness specimen. The value of KC became relatively constant at about 13 MPa√m when the specimen thickness exceeds 8 mm. This value was then considered as the plane strain fracture toughness KIC of AZ61 magnesium alloy. Calculation of the minimum thickness requirement for plane strain condition and the size of the shear lips of the fracture surface validate the obtained KIC value.

scholarly journals Plane-Strain Fracture Toughness on Thin AZ31 Wrought Magnesium Alloy Sheets

2003 ◽  
Vol 44 (5) ◽  
pp. 986-990 ◽  
Author(s):  
Taisuke Sasaki ◽  
Hidetoshi Somekawa ◽  
Akira Takara ◽  
Yukio Nishikawa ◽  
Kenji Higashi
Keyword(s):  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Plane Strain ◽  
Plane Strain Fracture Toughness ◽  
Strain Fracture ◽  
Wrought Magnesium Alloy
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