03 a) Explain the effect of stress and temperature on creep behaviour of metals (12 marks b) Briefly give four reasons f

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03 A Explain The Effect Of Stress And Temperature On Creep Behaviour Of Metals 12 Marks B Briefly Give Four Reasons F 1 (19.91 KiB) Viewed 36 times

03 a) Explain the effect of stress and temperature on creep behaviour of metals (12 marks b) Briefly give four reasons for creep at high homologous temperatures (8 Marks Briefly explain the following mechanisms of creep deformation in metals ) Dislocation glide 14 martes) (11) Diffusion creep (4 marks) d) A boiler tube, 76 mm external diameter operates at 600°C while operating under a pressure of 80 MPa. The strain in the materials is limited to 1% after 10000 hours of operation. If the creep strength of the material at 600°C in 01/10.000 is 150 MPa, determine the required wall thickness of the tube if the safety factor is 2.5. (12 marks