Subcritical annealing can be done at higher temperature than full annealing.
Q: Explain how do the cold work processes, such as extrusion or rolling, increase the strength of the…
A: A cold working process is used to increase the strength of the material. This process takes place…
Q: ide information about tempering heat treatment temperature stages, microstructures formed and their…
A: Tempering is a heat treatment process, which is mostly used to increase the ductility, toughness and…
Q: (a) State TWO (2) metal forming processes that are suitable in producing a part shown in Figure 4.…
A: This metal product can be produced in many forming process. In which the two forming process to make…
Q: explain the differences between recovery and recrystallization processes
A: Recovery and recrystallization processes are the types of forming processes. In recovery, the…
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Q: Q. Discuss the following sentences: 1- A wide particle size distribution is preferred for dry…
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Q: Provide information about tempering heat treatment temperature stages, microstructures formed and…
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Q: In steel making, if the raw materials contain low Si and high P contents, which process should be…
A: For steel Making process which using electric arc furnace. Which primary material will be the scrap…
Q: Calculate the percent cold reduction when ansteel wire is cold drawn from a diameter of 6 mm to a…
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Q: I. Annealing is carried out to relieve stresses II. Annealing is carried out to increase softness…
A: Given Data⇒Statements related to annealing processProblem definition⇒Problem says determine which…
Q: Figure 11.20 For cylindrical specimens of an oil-quenched 4140 steel, (a) tensile strength, (b)…
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Q: Which of the following may occur during an annealing heat treatment? (Please choose all that apply)…
A: Annealing Heat treatment: The Annealing process is stated as the heat treatment process in which the…
Q: Subcritical annealing can be done at lower temperature than full annealing. Select one: True False
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Q: Hot working is a process commonly seen in the production floor that usually involved heating…
A: Hot working process. Hot working is a metal forming process where metal is formed by very high…
Q: Explain the difference between hardness and hardenability
A: The different Mechanical properties of engineering materials are: Elasticity Plasticity Ductility…
Q: What are the critical differences between work hardening and geometric hardening?
A: Hardening is defined as the process of strengthening the material by the heat treatment process.
Q: The strength of heat treated steel decreases with increasing tempering temperature
A: Statement is True Statement is True
Q: rinciple used in Residual Stress Measurment with advantages, disadvantages and aplicatio
A: In the method of Residual Stress Measurment,Stressed out material is removed by using the technique…
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A: Notch sensitivity factor of grey cast iron can be defined as the ratio of increases in the actual…
Q: A slab of 1500 mm x 750 mm x 500 mm is required to be cast using a sand casting process. It was…
A: given - Dimensions of slab = 1500 mm× 750mm×500mm = 150cm×75cm×50cm…
Q: How would you know if there were different creep mechanisms acting at different temperatures?
A: Creep: When a part of any member is subjected to constant stress at high temperature for a long…
Q: The basics of strain hardening should be explained. Is this method still effective at high…
A: Strain hardening is one of the stages in the stress-strain curve of a material.
Q: Question-2 If it takes 12.0 min to 50% recrystallize a piece of high-purity copper sheet at 140°C…
A: We have to find time for recrystallize
Q: Chvorinov's rule-!
A: kindly refer below solution.
Q: describe the effect that tempering has on material properties
A: Property of the material is altered using tempering. This is a process of heat treatment which helps…
Q: Why is heat treatment typically an integral part of the process flow for bulk deformation of metal?.
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Q: Briefly cite the differences between the recovery and recrystallization processes.
A: Annealing- It isla heat treatment process in which the steel is heated to 50-100°C above austenitic…
Q: . Briefly explain the difference between hardness and hardenability.
A: Hardness and hardenability are derived from the same root word but have a very different meaning.…
Q: Describe the process carried on the Hall-Héroult with identifying the required processing ratio of…
A: Hall-Heroult Process
Q: Calculate the percent cold reduction when an Al wire is cold drawn from a diameter of 4 mm to a…
A: Given data, D1= 4 mm D2= 2 mm
Q: Explain the concept and procedures involved in a case hardening process of a low carbon steel and…
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Q: Can the yield point of material be increased by strain hardening?
A: The strain hardening process is known as the Work hardening. This operation is carried out below the…
Q: 3) Which adxantages, disadxantages and characteristE REOPeities sdoes hot working relative to cold…
A: Hot Working and Cold Working.
Q: Briefly explain the heat treatment steps of a tool steel by use of proper drawings and explain why…
A: Tool steel Tool steel is the type of steel which has controlled chemical composition and have…
Q: What is the hardening exponential n and deformation rate sensitivity exponential m ? Comment similar…
A: n- Strain hardening Exponential m-Strain sensitivity Exponential
Q: Subcritical annealing can be done at lower temperature than full annealing. Select one: O True O…
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Q: Homogeneity of metal is developed in hot forming process. * O F От
A: We are suppose to solve only one question. Please post other question as a separate question.
Q: Cold forming method is applied to many metals and alloys such as steel, aluminum and copper at room…
A: The factor that leads to increase in the strength of the material in cold forming is strain…
Q: Distinguish between the upper yield point and the lower yield point?
A: The yield strength or yield point of a material is defined in engineering and materials science as…
Q: Distinguish cold working from warm working including their advantages and disadvantages
A: In this question, we have to differentiate between cold working and warm working along with their…
Q: What is the hardening process? What is rooting?
A: Hardness: The hardness of a substance is the resistance of its surface to indentation or abrasion.…
Q: Give an example of Dilatation?
A: Volume strain or dilatation is measured as a change in volume, δV, with respect to an original…
Q: Are surface-hardened parts always case-hardened by carburizing?
A: The case hardening is a process in that a thin layer of surface is hardened. This thin layer is…
Q: make a comparison between annealing, normalizing hardening, and tempering
A: The main difference between annealing and normalizing is that annealing allows the material to…
Q: Why does the hardness decrease at 600 ° C after rising when the tempering process
A: Tempering is a heat treatment process, which is used to increase the toughness of iron based alloys.…
Q: What is the driving force for recrystallization What are the stages to build up new. phase
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- What properties can annealing produce in metals?Identify the mold die material in order to produce the steel casting parts. Steel Cast iron Graphite Wood Full annealing can be done at lower temperature than the subcritical annealing. Select one: True False1-llustrate the process which work above recrystallization temperature with neat sketch?
- Q1: Austenitized 40 mm diameter 5140 alloy steel bar is quenched in agitated oil. Predict what is the Rockwell hardness of this bar will be at (a) its surface and (b) its center (c) What do you think about the difference in hardness number between the center and surface (d) Differentiate between hardness and hardenability (e) Rank the steels in the figure below from lowest to highest hardenability and explain why. 600- Bar diameter (mm) 100 80 60 40 20 0 300 0 Cooling rate at 700°C (°C/sec). -150 55 0 تنا 25 ------- 5 S 10 12.5 8 M-R L 1/2 34-R Agitated oil 15 20 ¼ ¾ Distance from quenched end. De (Jominy distance) 5,5 54 Car Bar diameter (in.) 0 25 mm. 1 in. Hardness (Rockwell C) Where (C = center, S = surface, M-R = mid-radius) 2828 292 65 60- 55- 50 45 40 35 30 25 20 15 10 0 J 10 5140 30 20 Distance from quenched end (mm) 4340 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 Distance from quenched end (sixteenths of an inch) 40 9840 4140 8640 50Q4: Answer with True or False: 1-Cooling rate when quenching steel in agitated water is faster than brine. 2-Normalizing can be done for hypereutectoid steels by heating the steel above Acm. 3-Marquenching of the hardened steel sometimes causes quench cracks. 4-New carbides type begins to form after tempering AISI 1020 steel after 100°C. 5-Recrystallization temperature decreases with increasing the percentage of prior cold work. 6-Steels are categorized depending on their microstructure and how they've been heat treated. 7-Annihilation of dislocations, polygonization is commercially done by recrystallization annealing 8-Process annealing for cold worked for AISI 1040 steel includes heating the steel to 650°C. 9-Carbon content increases martensite start and finish temperatures. 10-Retained austenite is more at center than surface of a quenched part.Austentitic stainless steel's are not hardenable by cold working however Austentic stainless steel's can be strengthened by heat treatment true or false?
- 36 Asiacell O Homework 4 -... -> 3 Class Materials Eng. Dep. Heat Treatment Ismail Ibrahim Marhoon Homework 4 Q1: 1.5 in diameter steel part is quenched in oil with no agitation. (H=0.20). If we use a 4340; 4140; 8640; 5140; 1040 steel, what would be the hardness number at the center of the part? Q2: Determine the best quenching medium to produce a minimum hardness of HRC 40 at the center of a 3.75 cm diameter 4320 steel bar. Given Cingrate t 00c00 143 to 4340 50 40 8640 ab 9310 30 4320 1050 1040 10 20 it 1 1 2n 10 20 30 Jominy distance th of an inch) Die he eted e TABLE The N canticient, or seveity of the querch, far several guenehing sedla H Coefticient Coaling Rate at he Center of a l-in. Bar (CA) Medium Ol no taton) 04 anitation) 025 18 45 HyD inc agtation H0 fegiutont Brine Ino agtaton) Brine lapttiori 10 4.0 190 20 60 90 230 Ad DISTANCE FROM OUENCHED END IN) DIAMETER IN)Why does the hardness decrease at 600 ° C after rising when the tempering processQ3] A. What are annealing purposes? B. Calculate the upper and lower critical temperature for steel composition as follow: %C %Si %Mn %P %S %Cr %Mo %Fe 0.15 1.00 0.60 0.025 0.025 9. 1.10 balance