Manufacturing Engineering And Technology -- Access Card
7th Edition
ISBN: 9780133131109
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 1, Problem 41QTP
To determine
The ball of a ballpoint pen is
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The 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?
Briefly explain the ASTM grain-size standard
Assume that 16 grains per square inch are counted in a micrograph taken at 250X.What is the ASTM number for grain size?
Chapter 1 Solutions
Manufacturing Engineering And Technology -- Access Card
Ch. 1 - What is the difference between an atom and a...Ch. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define anisotropy. What is its significance?Ch. 1 - What effects does recrystallization have on the...Ch. 1 - What is strain hardening, and what effects does it...Ch. 1 - Explain what is meant by structure-sensitive and...Ch. 1 - Prob. 9RQCh. 1 - What influence does grain size have on the...
Ch. 1 - What is the relationship between the nucleation...Ch. 1 - What is a slip system, and what is its...Ch. 1 - Explain the difference between recovery and...Ch. 1 - What is hot shortness, and what is its...Ch. 1 - Explain the advantages and limitations of cold,...Ch. 1 - Describe what the orange peel effect is. Explain...Ch. 1 - Some metals, such as lead, do not become stronger...Ch. 1 - Describe the difference between preferred...Ch. 1 - Differentiate between stress relaxation and stress...Ch. 1 - What is twinning? How does it differ from slip?Ch. 1 - Prob. 21QLPCh. 1 - What is the significance of the fact that some...Ch. 1 - Is it possible for two pieces of the same metal to...Ch. 1 - Prob. 24QLPCh. 1 - A cold-worked piece of metal has been...Ch. 1 - What materials and structures can you think of...Ch. 1 - Two parts have been made of the same material, but...Ch. 1 - Do you think it might be important to know whether...Ch. 1 - Explain why the strength of a polycrystalline...Ch. 1 - Describe the technique you would use to reduce the...Ch. 1 - What is the significance of the fact that such...Ch. 1 - Prob. 32QLPCh. 1 - It has been noted that the more a metal has been...Ch. 1 - Is it possible to cold work a metal at...Ch. 1 - Comment on your observations regarding Fig. 1.14.Ch. 1 - Is it possible for a metal to be completely...Ch. 1 - Prob. 37QTPCh. 1 - Prob. 38QTPCh. 1 - Plot the data given in Table 1.1 in terms of...Ch. 1 - A strip of metal is reduced from 30 mm in...Ch. 1 - Prob. 41QTPCh. 1 - How many grains are there on the surface of the...Ch. 1 - Prob. 43QTPCh. 1 - Prob. 44QTPCh. 1 - Prob. 45QTPCh. 1 - A technician determines that the grain size of a...Ch. 1 - If the diameter of the aluminum atom is 0.28 nm,...Ch. 1 - The following data are obtained in tension tests...Ch. 1 - Prob. 50QTPCh. 1 - Prob. 51QTPCh. 1 - Prob. 52QTPCh. 1 - Same as Prob. 1.39, but ASTM no. versus...Ch. 1 - By stretching a thin strip of polished metal, as...Ch. 1 - Draw some analogies to mechanical fiberingfor...Ch. 1 - Draw some analogies to the phenomenon of hot...Ch. 1 - Take a deck of playing cards, place a rubber band...Ch. 1 - Give examples in which anisotropy is scale...Ch. 1 - The movement of an edge dislocation was described...
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- Interpret comparison method to plainmetric method for determining the grain size.arrow_forwardSamples 1 and 2 are identical except for the grain size. Which sample has the smaller grains (clearly mention 1 or 2)?arrow_forwardDetermine 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.arrow_forward
- Determine the ASTM grain size number if 32 grains per square inch are measured at a magnification of 260×arrow_forwardUnder what high temperature circumstances is a very small grain size detrimental, and under what circumstances is it advantageous?arrow_forwardIs there any relationship between a crystal and a grain? justify your answer.arrow_forward
- Determine the ASTM grain size number of a metal specimen if 25 grains per square inch are measured at a magnification of 100x Solution please. Thankyouarrow_forwardDetermine the ASTM grain size number if 25 grains square inch are observed at a magnification of 50.arrow_forwardHow will results vary for grain size when using the linear intercept method versus the circular grid method?arrow_forward
- 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_forwardDetermine whether the first part of statement will INCREASE, DECREASE or have NO EFFECT in the second part of the statement. If there is an increase in temperature then the number of vacancies will _______. If there is an increase in atomic packing factor then the density will _______. If there is a decrease in cooling rate then the degree of crystallinity will _______.arrow_forwardExplain the hot working of metals related to the grain structure diagrams.arrow_forward
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