In the present figure: compare between the alloy number 1 (0.4% C) and 2 (1.2% C) regarding:A. The expected mechanical properties of the two alloys (with explanation).B. .The range of applications for these alloys.C. The stages of annealing treatments Including:1) Softening.2) Spheroidizing.3) Grain Size Reducing...12I p+ Fe,Ca + p

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Answered: In the present figure: compare between…

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Mechanical Engineering

In the present figure: compare between the alloy number 1 (0.4% C) and 2 (1.2% C) regarding:

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 26R

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In the present figure: compare between the alloy number 1 (0.4% C) and 2 (1.2% C) regarding: A. The expected mechanical properties of the two alloys (with explanation). B. The range of applications for these alloys. C. The stages of annealing treatments including: 1) Softening 2) Spheroidizing 3) Grain Size Reducing.. Subject: Metallurgy
List the phase(s) that are present, the phase composition(s) and the weight fractions of the phase(s) for each of the following alloys:(a) 70 wt% Zn-30 wt% Cu at 300 C (b) 90 wt% Pb-10 wt% Sn at 325 C (c) 2.5 kg Cu and 5.0 kg Ag at 900 C (d) 37 lbm Pb and 6.5 lbm Mg at 500 C
Briefly describe how precipitation hardening happens in Al alloys (how the microstructure evolves as annealing time increases). Why it first forms q” then q’ before q is finally formed? How does the alloy’s strength change during this process? What are the strengthening mechanisms?
Give complete solution, include diagram if need.
Copper-rich copper-beryllium alloys are precipitation hardenable. After consulting the portion of the phase diagram shown in Figure below, do the following: Composition (at% Be) 10 15 20 Liquid 1000 866°C 800 -620°C 600 a+ 400 2 3. (Cu) Composition (wt% Bo) (1) Indicate the range of compositions over which these alloys be precipitation hardened. (ii) Describe the heat-treatment procedures (in terms of temperatures) that would be used to precipitation harden an alloy having a composition of your choosing but lying within the range given for part (i). Temperature ("O
Cite the phases that are present and the phase compositions for the following alloys: 85 wt% Ag–15 wt% Cu at 800°C
1 Plastic Deformation Occurs Through Dislocation Motion... ...so in order to make a material stronger, we should prevent dislocations from moving. For each of the following alloys, identify the strengthening mechanism and explain how it impedes dislocation motion: A. An aluminum alloy "inoculated" with TiB2 during solidification, producing a large number of small grains. B. Monel, a corrosion-resistant solid solution of Ni and Cu. C. An aluminum-lithium aerospace alloy containing precipitates of Al3Li. D. Wrought iron, which is often worked into complex shapes such as railings or furniture.
According to Reference [1], alloys of nickel (Ni) and tungsten (W) are can form substitutional solid solutions up to approximately 11 at% W. Consider two different alloy compositions: Ni-5W (5 at% W) and Ni-10.5W (10.5 at% W). A. Which composition should be more ductile? B. Which composition should be stronger? C. Using the oy~ C¹/2 relationship from the lecture slides, how many times larger should the yield strength be for Ni-10.5W compared to Ni-5W? D. Where should the tungsten atoms sit relative to the dislocation on or opposite the side with the extra half-plane? You will need information from Appendixes of the textbook.
For the isothermal time-temperature-transformation diagram provided (next page) for an Fe-C steel, answer the following (show any work on the diagram):a. based on the phases depicted, what is the average composition for the Fe-C alloy depicted (be specific). Explain your answer. (Note: you do have the Fe-C phase diagram in your notes and in the text for reference.)b. in an isothermal heat-treatment of a pure austenite structure at 300 C, how long will it take for austenite to be completely converted to bainite after bainite first begins to form?c. A standard size, automobile engine block and a 1 mm diameter rod of the same steel composition are taken from a heat-treatment furnace and immersed in a water bath at the same temperature. Do you expect that the microstructure of both pieces will be the same or different? Justify your answer.d. note that the time required to initiate the transformation of the austenite phase tends to decrease as the isothermal treatment temperature is reduced…
Problem 4 A 50 wt% Ni-50 wt% Cu alloy is slowly cooled from 1400°C (2550°F) to 1200°C (2190°F). (a) At what temperature does the first solid phase form? (b) What is the composition of this solid phase? (c) At what temperature does the liquid solidify? (d) What is the composition of this last remaining liquid phase?
Q6/ A. Show how the precipitation heat treatment of precipitation hardenable alloys differs from dispersion hardening process of composite material. B. What are the main constitutes of composite materials and what are the roles of each constitute?
Show full work from basic,Thanks