- Question 3 A State The Type Of Fracture That Has Occurred In The Figure Below Describe The Cracking Mechanism That Is 1 (354.07 KiB) Viewed 17 times
Question 3. a) State the type of fracture that has occurred in the figure below. Describe the cracking mechanism that is taking place and the external factors can lead to this type of failure. Acc.V Spot Magn Det WD 200 μm MIX 302 Materials Engineering. Swansea 20.0 KV 6.0 80x [5 marks] b) Describe the processes of ductile and brittle failure under static loading. Comment on the macroscopic failure processes that can be observed as a result of both types of fracture. [5 marks] c) How does grain size affect the impact toughness response of a BCC or HCP material and why? [4 marks] d) The microscopic images below are taken from two different test specimens that have undergone a tensile test, exhibiting brittle and ductile fractures. Identify the fracture mechanism for each image and describe the features observed on each fracture surface. EAZA IN Specimen A Specimen B [6 marks]