The Science and Engineering of Materials (MindTap Course List)
7th Edition
ISBN: 9781305076761
Author: Donald R. Askeland, Wendelin J. Wright
Publisher: Cengage Learning
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Chapter 4, Problem 4.54P
To determine
The grains/in2 that would appear on a photograph.
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Determine the ASTM grain size number of a metal specimen if 25 grains per
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Determine the ASTM grain size number if 90 grains per square inch are measured at a magnification of 55×.
In this problem, you are asked to find the ASTM grain size number given the number of grains per square inch and the magnification.
Solve Equation 4.18 (below) for G.
Briefly explain the ASTM grain-size standard
Chapter 4 Solutions
The Science and Engineering of Materials (MindTap Course List)
Ch. 4 - Gold has 5.82108vacancies/cm3 at equilibrium at...Ch. 4 - Prob. 4.2PCh. 4 - Calculate the number of vacancies per cm3 expected...Ch. 4 - Prob. 4.4PCh. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Au and Ag form a substitutional solid solution....
Ch. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - Write down the defect chemistry equation for...Ch. 4 - Prob. 4.20PCh. 4 - What is the Burger’s vector orientation...Ch. 4 - What is slip system and what role does it play in...Ch. 4 - Draw a Burgers circuit around the dislocation...Ch. 4 - What are the Miller indices of the slip...Ch. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Calculate the length of the Burgers vector in the...Ch. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - The crystal shown in Figure 4-19 contains two...Ch. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33PCh. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - Prob. 4.36PCh. 4 - Prob. 4.37PCh. 4 - Prob. 4.38PCh. 4 - Prob. 4.39PCh. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - Prob. 4.42PCh. 4 - Prob. 4.43PCh. 4 - Prob. 4.44PCh. 4 - Why is it that single crystal and polycryst alline...Ch. 4 - Prob. 4.46PCh. 4 - Prob. 4.47PCh. 4 - Prob. 4.48PCh. 4 - Prob. 4.49PCh. 4 - Prob. 4.50PCh. 4 - Prob. 4.51PCh. 4 - Prob. 4.52PCh. 4 - Prob. 4.53PCh. 4 - Prob. 4.54PCh. 4 - Prob. 4.55PCh. 4 - Prob. 4.56PCh. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - Determine the ASTM grain size number for the...Ch. 4 - Certain ceramics with special dielectric...Ch. 4 - Prob. 4.61PCh. 4 - Calculate the angle of a smalla ngle grain...Ch. 4 - For BCC iron, calculate the average distance...Ch. 4 - Every time we alloy a metal, it gets stronger. Is...Ch. 4 - Prob. 4.65PCh. 4 - Prob. 4.66PCh. 4 - Prob. 4.67PCh. 4 - Prob. 4.68PCh. 4 - Prob. 4.69PCh. 4 - Prob. 4.70PCh. 4 - Prob. 4.71PCh. 4 - Prob. 4.72PCh. 4 - Prob. 4.73PCh. 4 - Prob. 4.74PCh. 4 - Prob. 4.75DPCh. 4 - You would like a metal plate with good...Ch. 4 - Prob. 4.77DPCh. 4 - Temperature dependence of vacancy conc enlralwns....Ch. 4 - Prob. 4.79CPCh. 4 - Prob. 4.80CPCh. 4 - Describe the problems associated with metal...Ch. 4 - Prob. 4.2KP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- You have an Al 2024 alloy with predominantly (Al) and some CuAl2 (450ºC and 3 wt. % Cu). Most of the CuAl2 has gotten larger and diffused to the grain boundaries to give you the microstructure shown below on the right side. After testing the hardness of the sample is determined that it's too soft and not mechanically strong enough. Being specific regarding temperatures and times (or endpoint conditions), develop a method to make the Al 2024 alloy as hard as it can get. Show microstructural diagrams after each step.arrow_forwardSamples 1 and 2 are identical except for the grain size. Which sample has the smaller grains (clearly mention 1 or 2)?arrow_forwardGiven the following sketch of a metal alloy of the same composition and crystal structure but different microstructure (grain size), describe the following properties and the differences you would expect between the samples. Provide a rationale (formula if possible) for the properties differences. Yield Strength Toughness Elastic Modulus Conductivityarrow_forward
- Determine whether the first part of statement will INCREASE, DECREASE or HAVE NO EFFECT in the second part of the statement. 1. If there is an increase in application of stress then the presence of dislocation will _____. 2. If there is an increase in thickness of alumina then the hardness of it will _____. 3. If there is an increse in the difference between the valence of two alloying elements then the degree of solubility will ______.arrow_forward3. Mechanisms for Strengtheninga. What purposes do strengthening mechanisms serve?b. Describe each of the following mechanisms of strengthening:1. Strengthening of Solid Solutions2. Strain Hardening 3 . Strengthening of the grain size4. Age Hardening c. Based on your response in item b, what strengthening process do you believe is responsible for steel's durability? Why?arrow_forwardExplain the hot working of metals related to the grain structure diagrams.arrow_forward
- Bainite phase and pearlite phase have different mechanical properties due to its structure differences. Discuss the hardness and tensile strength of these 2 phases using isothermal transformation temperature diagram.arrow_forward1. Explain in 1-3 bullets how as a practicing engineer you determine the yield strength of a metal from a tensile stress-strain curve. 2. Explain what is happening at the yield strength for a metal from a physical standpoint in 1-3 bullets. (e.g. what are the atoms doing?)arrow_forwardThe density of pure aluminum calculatedfrom crystallographic data is expected tobe 2.69955 g cm3.(a) Design an aluminum alloy that has adensity of 2.6450 g cm3(b) Design an aluminum alloy that has adensity of 2.7450 g cm3. The density of pure aluminum calculatedfrom crystallographic data is expected tobe 2.69955 g cm3.(a) Design an aluminum alloy that has adensity of 2.6450 g cm3.(b) Design an aluminum alloy that has adensity of 2.7450 g cm3.arrow_forward
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