13- Copper-rich copper-beryllium alloys are precipitation hardenable. After consulting the portion of the phasediagram shown in the figure below, do the following:(a) Specify the range of compositions over which these alloys may be precipitation hardened.Temperature (°C)(b) Briefly describe the heat-treatment procedures steps (in terms of temperatures) that would be used toprecipitation harden an alloy having a composition of 1 wt% Be.10008006004000(Cu)01Composition (at% Be)1015a + L2α + 1/2LiquidComposition (wt% Be)866°C-620°C320x + 1₁

To Explain : a) The range of compositions over which these alloys may be precipitation hardened. b)…

Answered: 13- Copper-rich copper-beryllium alloys…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

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
800 A Eutectoid temperature H 1400 700 A H 1200 600 1000 500 B 800 400 A 300 600 M(start) 200 M + A 50% 400 M(50%) M(90%) 100 200 10-1 1 10 102 103 104 105 Time (s) Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the final microstructure and approximate amount of each. Assume a small specimen has been held long enough to have achieved a complete and homogeneous austenitic structure prior to treatment. Sample (1): Quickly cool specimen from 800°C to 575°C, hold for 10 s, then quench to room temperature. Sample (2): Quickly cool specimen from 800°C to 500°C, hold for 100 s, then quench to room temperature. O after treatment, sample 1 is 50% pearlite, 50% austenite O after treatment, sample 2 is bauxite O after treatment, sample 1 is 25% pearlite O after treatment, sample 2 is bainite O after treatment, sample 2 is austenite O None of the answers is correct. O after treatment, sample 2 is coarse pearlite O after treatment, sample 1 is…
The TTT diagram for a 1077 eutectoid steel is given. Explain the heat treatment process to form 50% Fine Pearlite + 50% Coarse Bainite. 800 A 1400 Eutectoid temperature 700 A 1200 600 1000 500 B 800 400 A 300 600 M(start) 200 M + A 50% 400 M(50%) М190%) 100 200 10-1 1 10 102 103 104 105 Time (s) Temperature (°C) Temperature (°F)
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.
QI/ Draw a thermal equilibrium diagram for the binary alloy system (Si –Au), from the following data:- a- Si melts at 1414 °C, and Au melts at 1064 °C , and identify all phases are present in the diagram. b- Eutectic is formed at 360°C containing 20 Wt% Si -80 Wt% Au . c- Determine the amount of each phase for the alloy which consist 60 Wt% Si- 40Wt % Au at 1200 °C and 800 °C ,then determine the amount of eutectic at 200 °C?
The TTT diagram for a 1076 eutectoid steel is given: What is the heat treatment process to form 50% Coarse Pearlite + 50% Martensite. 800 A 1400 Eutectoid temperature 700 A 1200 600 1000 500 800 400 A 600 300 M(start) 200 50% 400 M + A M(50%) M(90%) 100 200 10-1 1 10 102 103 104 105 Time (s) Temperature (°C) Temperature (°F)
Q1 / Two metals Beryllium (Be) and Silicon (Si) have melting points 1282°C and 1414 °C respectively, are completely soluble as liquids but completely insoluble as solids . They form a eutectic at 1090°C containing 61 wt% Si -39wt% Be? Determine the following:- 1- Draw the thermal equilibrium phase diagram and identify all phases are present in diagram ,then sketches what happens in microstructure when the alloys containing , a- 10wt% Si, b-70wt%Si , solidify completely. 2- Determine the composition and the amount of each phase for the alloy which contain 15 wt% Si-85wt% Be at 1150°C If the alloy is hypoeutectic determine the amount of eutectic at 600 °C? or hypereutectic and
Draw thermal equilibrium diagram for the binary alloy system (Si-Au), from the following data:- a- Silicon melts at 1414 °C, and gold melts at 1064 °C. b-Eutectic is formed at 360°C containing 20 Wt% Si -80 Wt% Au, and identify all phases are present in the diagram c-Determine the amount of each phase for the alloy which consist of 60 Wt% Si- 40Wt % Au at 1200 °C and 800 °C ,then determine the amount of eutectic at 200 °C?
2) There is an aluminum-copper alloy. The phase diagram is given below. What heat treatment do you apply? Using this graph, how is it possible to increase the strength and hardness of this alloy? Consider this question within the scope of heat treatments. Composition (at % Cu) 10 20 30 700 1200 600 L a+ L 0 +L 1000 a 500 (CuAl,) a + 0 800 400 600 300 10 20 30 40 50 (AI) Composition (wt% Cu) Temperature (°C) Temperature (°F)
1-The microstructural design of Iron-Carbon(Fe-C) alloys has led to the development of vast range of steels for structural material applications. The phase diagram provide means for producing specific microstructures. Using the phase diagram below to answer the following questions A – If the liquid mixture of Fe-3%Wt C is slowly cooled from 1600 C to 1200C indicate the phase(S) that are present at 1200 C . Also calculate the composition of the of phases.(10) B-Describe the sequence of all phase transformation that accour from Fe-1.5%wt C is slowly cooled from 1600 C to 400 C. Use the diagram below to to describe the microstructures for each phase transformation (10)
Carbon steel (0.45%C) is subjected to different heat treatment procedures. Which one gives the best complex properties to steel а. austenitization and fast cooling (water) b. austenitization and normalization (air cooling) О с. austenitization and slow cooling (furnace) d. austenitization and quenching plus tempering e. austenitization and age-hardening
Using the following table, draw a melting point diagram and estimate the eutectic temperature and composition: Percent composition Melting point range (°C) 100% A 125-126 75% A-25% B 115-120 65% A- 35% B 128-131 50% A- 50% B 135-140 100% B 151-152 Can you suggest what additional points you need to give a more accurate measure of the eutectic point?

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS