Loose Leaf For Foundations Of Materials Science And Engineering
6th Edition
ISBN: 9781260049169
Author: William Smith, Javad Hashemi, Prof.
Publisher: McGraw-Hill Education
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Question
Chapter 4.8, Problem 41AAP
To determine
If there are 300 grains per square inch on a photomicrograph of a metal at 100x, what is its ASTM grain-size number?
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Chapter 4 Solutions
Loose Leaf For Foundations Of Materials Science And Engineering
Ch. 4.8 - Prob. 1KCPCh. 4.8 - Define the homogeneous nucleation process for the...Ch. 4.8 - In the solidification of a pure metal, what are...Ch. 4.8 - In the solidification of a metal, what is the...Ch. 4.8 - During solidification, how does the degree of...Ch. 4.8 - Distinguish between homogeneous and heterogeneous...Ch. 4.8 - Describe the grain structure of a metal ingot that...Ch. 4.8 - Distinguish between equiaxed and columnar grains...Ch. 4.8 - How can the grain size of a cast ingot be refined?...Ch. 4.8 - Prob. 10KCP
Ch. 4.8 - Prob. 11KCPCh. 4.8 - Prob. 12KCPCh. 4.8 - Distinguish between a substitutional solid...Ch. 4.8 - What are the conditions that are favorable for...Ch. 4.8 - Prob. 15KCPCh. 4.8 - Prob. 16KCPCh. 4.8 - Prob. 17KCPCh. 4.8 - Prob. 18KCPCh. 4.8 - Describe the structure of a grain boundary. Why...Ch. 4.8 - Describe and illustrate the following planar...Ch. 4.8 - Prob. 21KCPCh. 4.8 - Describe the optical metallography technique. What...Ch. 4.8 - Prob. 23KCPCh. 4.8 - Prob. 24KCPCh. 4.8 - Prob. 25KCPCh. 4.8 - Prob. 26KCPCh. 4.8 - Prob. 27KCPCh. 4.8 - Prob. 28KCPCh. 4.8 - Prob. 29KCPCh. 4.8 - Prob. 30KCPCh. 4.8 - Prob. 31KCPCh. 4.8 - Calculate the size (radius) of the critically...Ch. 4.8 - Prob. 33AAPCh. 4.8 - Prob. 34AAPCh. 4.8 - Calculate the number of atoms in a critically...Ch. 4.8 - Prob. 36AAPCh. 4.8 - Prob. 37AAPCh. 4.8 - Prob. 38AAPCh. 4.8 - Prob. 39AAPCh. 4.8 - Prob. 40AAPCh. 4.8 - Prob. 41AAPCh. 4.8 - Prob. 42AAPCh. 4.8 - Determine, by counting, the ASTM grain-size number...Ch. 4.8 - Prob. 44AAPCh. 4.8 - For the grain structure in Problem 4.43, estimate...Ch. 4.8 - Prob. 46AAPCh. 4.8 - Prob. 47SEPCh. 4.8 - Prob. 48SEPCh. 4.8 - Prob. 49SEPCh. 4.8 - Prob. 50SEPCh. 4.8 - In Chapter 3 (Example Problem 3.11), we calculated...Ch. 4.8 - Prob. 52SEPCh. 4.8 - Prob. 53SEPCh. 4.8 - Prob. 54SEPCh. 4.8 - Prob. 55SEPCh. 4.8 - Prob. 56SEPCh. 4.8 - Prob. 57SEPCh. 4.8 - Prob. 58SEPCh. 4.8 - Prob. 59SEPCh. 4.8 - Prob. 60SEPCh. 4.8 - Prob. 61SEPCh. 4.8 - Prob. 62SEPCh. 4.8 - Prob. 63SEPCh. 4.8 - Prob. 64SEPCh. 4.8 - Prob. 65SEPCh. 4.8 - Prob. 66SEP
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- A photomicrograph of surface of a metal sample is taken at 200X having 60 grains /in2. Calculate the following;i. Number of grains / in2 corresponding to Magnification 100Xii. ASTM grain size Number ‘n’ corresponding to Magnification 100Xarrow_forwardThe following is a schematic micrograph that represents the microstructure of some hypothetical metal. 100 μη Determine the following: (a) Mean intercept length (b) ASTM grain size number, Garrow_forwardFor a certain palladium micrograph we have that the ASTM grain size number is 11. Determine the number of grains/in² if a) the magnification is 250x and b) if the magnification is 10x.arrow_forward
- Assume that 16 grains per square inch are counted in a micrograph taken at 250X.What is the ASTM number for grain size?arrow_forwardDetermine the ASTM grain size number if 32 grains per square inch are measured at a magnification of 260×arrow_forwardQuestion 3: Determine the ASTM grain-size number if 30 grains per square inch are measured at a of 250x magnificationarrow_forward
- In an measurement with 100× magnification factor on metal specimen, 65 grains per square inch are observed. Determine the ASTM grain size number of the specimen.arrow_forwardDetermine the ASTM grain size number if 25 grains square inch are observed at a magnification of 50.arrow_forwardBriefly explain the ASTM grain-size standardarrow_forward
- For an ASTM grain size of 6, approximately how many grains would there be per square inch under each of the following conditions? (i) At a magnification of 100X (ii) Without any magnificationarrow_forwardThe ball of a ballpoint pen is 1 mm in diameter and has an ASTM grain size of 10. How many grains are there in the ball?arrow_forwardFor this problem, there is no correct answer since each individual may end-up with a slightly different result. Calculate the grain size number of this micrograph using the six red lines already included on the graph: (a) LT= (b) P = (c) M = (d) λ = (e) G = (specify unit) (specify unit) 100 μmarrow_forward
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