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Matse 259 Exam 4 With Complete Solutions
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Matse 259 Exam 4 With Complete Solutions
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Solution 2024/2025Pepper
Matse 259 Exam 4 With Complete Solutions
Micro-structures that result from decomposition of austenite (3) ANS✔✔ 1. Through slow-cooling you get Pearlite+a
eutectoid phase
2. Through moderate cooling you get Bainite
3. Through rapid quench you get Martensite
-->By reheating the martensite you get tempered martensite
Cementite or Ferrite
Harder? ANS✔✔ Cementite
Cementite fraction relationship with
1. Hardness
2. Tensile Strength
3. Yield Strength ANS✔✔ 1. Higher
2. Higher
3. Higher
List in increasing hardness
1. Pearlite (Coarse and Fine)
2. Bainite
3. Tempered Martensite
4. Spheroidite
5. Martensite ANS✔✔ 1. Spheroidite
, Solution 2024/2025
Pepper
2. Coarse Pearlite
3. Fine Pearlite
4. Bainite
5. Tempered Martensite
6. Martensite
Low carbon steel microstructures consist of ANS✔✔ ferrite and pearlite
How do you strengthen low carbon steel? ANS✔✔ Cold working
Difference between low carbon steels and high strength low alloy steels ANS✔✔ These are considered low carbon steels
but just have a higher strength
Microstructure of medium carbon steel ANS✔✔ Tempered Martensite
What are tool steels ANS✔✔ High carbon steels containing carbide forming alloy elements
6 Types of Nonferrous Alloys ANS✔✔ 1. Cu Alloys-->Brass & Bronze
2. Mg Alloys
3. Al Alloys
4. Ti Alloys
5. Noble Metals
6. Refractory Metals
Stainless Steel Def ANS✔✔ A group of ferrous alloys that contain at least 11% Cr
5 Categories of Stainless Steels ANS✔✔ 1. Ferritic
2. Austenitic
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