Metal forming operations can only be performed when the material undergoes plastic deformation.(a) True(b) FalseI had been asked this question by my school principal while I was bunking the class.The doubt is from Plastic Deformation and Yield Criteria topic in portion Types of Die & Metal Forming Processes of Casting-Forming-Welding II

Metal forming operations can only be performed when the material under

1.	Metal forming operations can only be performed when the material undergoes plastic deformation.(a) True(b) FalseI had been asked this question by my school principal while I was bunking the class.The doubt is from Plastic Deformation and Yield Criteria topic in portion Types of Die & Metal Forming Processes of Casting-Forming-Welding II
Answer» Right OPTION is (a) True The explanation is: In metal forming process, plastic DEFORMATION of the material is compulsory. It is a process in which the required SHAPE of metal is achieved by plastic deformation. Stresses are induced in the metal which is greater than its yield strength but LESS than its fracture strength so that the metal can be deformed into the required shape.

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