Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 27, Problem 17R
Why must cracks in the martensite layer of high-manganese steels be removed?
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What is the composition (wt% C) of a steel with AISI designation 1090? .Would this be considered a low, medium, or high carbon steel? (circle one)
I. Martensitic stainless steels are capable of being heat treated
II. Austenitic Stainless Steels are the most corrosion resistant because of the high chromium contents
III. Ferritic Stainless Steels are hardened and strengthened by cold work
Which statement(s) is/are true given above about stainless steels?
I. HSLA steels are developed to replace gray irons
II. In normal atmospheres, HSLA steels are more resistant to corrosion than the plain carbon steels
III. HSLA steels are ductile, formable and machinable
Mark the false statement given above about HSLA (High Strength, Low Alloy) steels?
Chapter 27 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 27 - What is meant when a metal is said to have good...Ch. 27 - What does the term weldability involve?Ch. 27 - What properties of a metal can be affected by the...Ch. 27 - Referring to Table 27-2, what commercial joining...Ch. 27 - Referring to Table 27-2, what commercial joining...Ch. 27 - Referring to Table 27-2, what types of metals can...Ch. 27 - What two organizations have developed systems for...Ch. 27 - Explain the steel classification number 1030.Ch. 27 - Referring to Table 27-3, what is the composition...Ch. 27 - What is the maximum allowable percentage of...
Ch. 27 - According to Table 27-4, at what level of carbon...Ch. 27 - What factors other than carbon affect a steel's...Ch. 27 - Why would some low-carbon steels have severe...Ch. 27 - What must be done to steels before welding and...Ch. 27 - Why are high-carbon steels preheated before...Ch. 27 - Explain how to weld tool steel with the oxyfuel...Ch. 27 - Why must cracks in the martensite layer of...Ch. 27 - Prob. 18RCh. 27 - What problems can occur to stainless steel as it...Ch. 27 - Why should stainless steel not be held at a...Ch. 27 - What are the different uses for the three types of...Ch. 27 - Referring to Table 27-6, what diameter SMA welding...Ch. 27 - Why must cast iron weld metal be ductile?Ch. 27 - Why should copper be welded with high currents and...Ch. 27 - Why can't aluminum oxide be melted off aluminum?Ch. 27 - Why are aluminum welds likely to cause distortion...Ch. 27 - Prob. 27RCh. 27 - What do the letters and numbers in a magnesium...Ch. 27 - How can a part be cleaned before it is welded?Ch. 27 - How can a spark test be used to identify metals?
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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
- Briefly explain the heat treatment steps of a tool steel by use of proper drawings and explainwhy multiple tempering is applied during heat treatment?arrow_forwardQuestion-5 (a) Describe the structural changes that take place when a 0.4%-C plain-carbon steel is slowly cooled from the austenitic region just above the upper transformation temperature. (b) What is a binary eutectic alloy system? Mention all important points. Give some examples.arrow_forwardAs the carbon content of plain carbon steel is increased what happens to its strength and hardness? decreasesincreasesarrow_forward
- heat -treatment: a-Draw on the same graph paper the (Hardness- Distance from quenched end) curve for each steel specimen. b- What would be the possible causes for the difference in hardness values regarding the composition of each steel? .Explainarrow_forwardQuestion-6 A 0.25% C hypoeutectoid plain-carbon steel is slowly cooled from 950°C to a temperature just slightly below 723°C. (a) Calculate the weight percent proeutectoid ferrite in the steel. (b) Calculate the weight percent eutectoid ferrite and weight percent eutectoid cementite in the steel.arrow_forwardAustentitic stainless steel's are not hardenable by cold working however Austentic stainless steel's can be strengthened by heat treatment true or false?arrow_forward
- What type of hardening operation that leaves the inner core in a softer condition is sometimes performed on medium-carbon steels?arrow_forwardWhat is the maximum allowable percentage of manganese in carbon steel as defined by the AISI classification for carbon steel?arrow_forwardWhat stainless steel(s) would a. have low creep at high temperatures? b. be used for food service equipment?arrow_forward
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