Mechanical Engineering - Engineering Materials - Discussion
Discussion Forum : Engineering Materials - Section 1 (Q.No. 17)
17.
An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and
Discussion:
13 comments Page 1 of 2.
Vicky said:
1 decade ago
Answer is manganese why I am supporting this manganese act as antioxidant element it may resist crack and reacts with sulphur and form magnesium sulphide to avoid crack.
Shubham said:
1 decade ago
But why not chromium?
Cr also increases strength and resist corrosion answer fatigue.
Cr also increases strength and resist corrosion answer fatigue.
Pankaj said:
1 decade ago
I agree with @Shubham, cr is a wear resistant and generally cr is used along with other alloys to improve wear resistance.
Mahesh Hingu said:
1 decade ago
@Shubham, @Pankaj.
By addition of Mn in steel, it reacts with C and form very hard Mn3C or Mn6C at grain boundaries.
This steel is hadfield steel. By annealing, it changes to fully austenite and this increase work hardening property.
So it used in bulldozers, earth moving machinery etc.
By addition of Mn in steel, it reacts with C and form very hard Mn3C or Mn6C at grain boundaries.
This steel is hadfield steel. By annealing, it changes to fully austenite and this increase work hardening property.
So it used in bulldozers, earth moving machinery etc.
(2)
Sankar said:
1 decade ago
By addition of Mn to the steel is called hadfield manganese steels. When mechanical working done on the material it hardens more and more.
Ayush said:
1 decade ago
The purpose of using manganese is that Mn improves the work hardening of steel which is required to prevent the deformation under large force.
(1)
Oduaran isaac said:
9 years ago
Good explanation!
(1)
Shinu said:
9 years ago
Great explanation @Mahesh.
Manu said:
8 years ago
It is called hadfield steel.
Athish said:
8 years ago
What is Annealing?
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