In detailed paragraph, How are stainless steels and heat-resisting steels classified?
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In detailed paragraph, How are stainless steels and heat-resisting steels classified?
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- Explain the basic principle of the following steel making process: 1. Bessemer process 2. Open-heart process 3. Electric Arc processWhat stainless steel(s) would a. have low creep at high temperatures? b. be used for food service equipment?Why must cracks in the martensite layer of high-manganese steels be removed?
- Briefly explain the heat treatment steps of a tool steel by use of proper drawings and explainwhy multiple tempering is applied during heat treatment?State the range of carbon content in terms of weight percentage that can be theoretically varied in steel. Upon increasing the carbon content in plain carbon steel within the theoretical range, will it enhance or retard the mechanical properties such as tensile strength, compressive strength and hardness.? Give your answer with the span of carbon content that the particular property can. It can prevail.write 10 physical properties of mild steel. Also Explain each property
- What are the mechanisms of strengthening?With respect to the S-N diagram shown below, answer the following questions:(a) for Gray cast iron, what is the projected number of cycles to failure for an induced stress of 20,000 psi?(b) What is the endurance limit and associated stress for a 0.47% heat treated carbon steel? (c) What is the endurance limit for the Aluminum-copper alloy?(d) What is the endurance strength for heat treated Alloy Steel at 400,000 cycles?For each material, indicate its material class? Provide the properties for each and related applications? Cu-Zn brass?
- (b) For the same bar, if the engineering strains are 0.05 and 0.10 at engineering stresses of 200 and 220 MPa respectively, what would be the work hardening exponent of pure aluminium?How a heat treatment process needs to be carried out to obtain a martensite structure in steel? answer quickly?High Strength Microalloyed Steels for Petroleum Pipelines : At present, due to worldwide increased demand for oil, there is a need to develop exceptionally strong (yield strength of @800 MPa) steels for pipelines. Such strong steels allow for operating the pipelines under higher pressures and over a long distance. Such microalloyed steels often can contain such elements as Mn, Nb, V, Ti, Mo, Ni, Cr, and Cu. (a) What other factors must be considered for high-strength steels for oil pipelines? (b) Based on what you have learned in terms of mechanisms of strengthening, how can you choose the best possible alloying elements for this application? Assume that you can conduct whatever experiments are necessary.