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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As the carbon content of plain carbon steel is increased what happens to its strength and hardness?
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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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- What must be done to steels before welding and after welding if they contain more than carbon?arrow_forwardWhat is the maximum allowable percentage of manganese in carbon steel as defined by the AISI classification for carbon steel?arrow_forwardWhat type of hardening operation that leaves the inner core in a softer condition is sometimes performed on medium-carbon steels?arrow_forward
- What stainless steel(s) would a. have low creep at high temperatures? b. be used for food service equipment?arrow_forwardAfter hardening, steel is very hard and brittle. What operation is usually performed to reduce hardness and increase toughness so the steel is in a more usable condition?arrow_forwardExplain the properties and structure of plain carbon steel.arrow_forward
- Identify the correct alloy that has the highest compressive strength property from the following options. Mild Steel Aluminium Carbon Steel Cast Ironarrow_forwardBriefly explain the heat treatment steps of a tool steel by use of proper drawings and explainwhy multiple tempering is applied during heat treatment?arrow_forward
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