Compute the rate of a reaction that obeys Avrami kinetics, assuming that the constants n and k have values of 3.385 and 1.162 × 10–9, respectively, for time expressed in seconds.

What is the approximate Brinell Hardness Number for a specimen of a eutectoid iron-carbon alloy (0.76 wt% C) that is first completely transformed to austenite, then cooled to room temperature at 160 oC/s cooling rate (see the attached figures)?

Rank the following iron-carbon alloys and associated microstructures from the hardest to the softest:I. 0.25 wt% C with coarse pearliteII. 0.80 wt% C with coarse pearliteIII. 0.25 wt% C with spheroiditeIV. 0.80 wt% C with fine pearlite

Consider a hypothetical eutectic phase diagram for metals A and B that is similar to that for the lead–tin system (see figure below). Determine the composition of the alloy that consists of the primary beta phase and the eutectic microconstituent (the fraction of the primary beta phase is 0.367).

For cooling of an alloy that is 70wt% Sn-30wt% Pb from 400 C to room temperature, what is the order of phases that you would expect to see?    

What is the nature of the microstructure, in terms of microconstituents present in a specimen with 1.12 wt% C when the specimen is rapidly cooled from 920°C to 600°C, held for 1 second, then cooled to 300°C, held for 10 seconds and quenched to room temperature?

Rank the following iron-carbon alloys and associated microstructures from the softest to the hardest:I. 0.25 wt% C with coarse pearliteII. 0.80 wt% C with BainiteIII. 0.25 wt% C with spheroiditeIV. 0.80 wt% C with fine pearlite

Which of the following statements are accurate regarding fluoroscopic systems that use flat panel digital detectors for fluoroscopy?

The tube under the patient fluoroscopic design is the more conventional design used because SELECT TWO THAT APPLY

Mandatory Prompt. Non-Governmental Organizations (NGOs) are the most numerous actors in the international realm. At the same time, they lack the clear authority and power of a Westphalian state. How can NGOs exert pressure on states to change domestic policies, or implement new international regulations? What are traits that separate successful from unsuccessful efforts?