Workability Behaviour of Fe-C-Mo Steel Preforms During Cold Forging

A systematic method to construct the workability diagram for powder metallurgy （P/M） materials has been proposed. Preforms of Fe-0.8 %C, Fe-0.8% C-1% Mo and Fe-0.8 % C 2 % Mo were prepared to the relative den-sity of 0.86 with two different geometries through primary operations of P/M processes. Eac...

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Published inJournal of iron and steel research, international Vol. 20; no. 9; pp. 126 - 130
Main Authors Narayan, S, Rajeshkannan, A, Pandey, KS, Shanmugam, S
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.09.2013
Springer Singapore
Subjects
Applied and Technical Physics
Criteria
Engineering
formability
Fracture mechanics
Iron and steel industry
Machines
Manufacturing
Materials Engineering
Materials Science
Mathematical analysis
Metallic Materials
Physical Chemistry
Preforms
Processes
Steel making
Steels
Workability
workability diagram
yield criterion
冷锻
可加工性
可操作性
断裂准则
最小二乘法
相对密度
粉末冶金
行为
formability
yield criterion
workability diagram
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Summary:A systematic method to construct the workability diagram for powder metallurgy （P/M） materials has been proposed. Preforms of Fe-0.8 %C, Fe-0.8% C-1% Mo and Fe-0.8 % C 2 % Mo were prepared to the relative den-sity of 0.86 with two different geometries through primary operations of P/M processes. Each sintered preform was cold upset forged with incremental compressive loading of 0.04 MN under three different lubricant conditions till a visible crack appeared at the free surface. Oyane＇s fracture criterion was used to develop a theory to study P/M prod-ucts. The least square method was used to determine the constants in fracture criteria and these equations were even- tually used to construct workability diagram. It is found that the proposed method was well in agreement with the experimental results.
Bibliography:11-3678/TF
workability diagram; yield criterion; formability
A systematic method to construct the workability diagram for powder metallurgy （P/M） materials has been proposed. Preforms of Fe-0.8 %C, Fe-0.8% C-1% Mo and Fe-0.8 % C 2 % Mo were prepared to the relative den-sity of 0.86 with two different geometries through primary operations of P/M processes. Each sintered preform was cold upset forged with incremental compressive loading of 0.04 MN under three different lubricant conditions till a visible crack appeared at the free surface. Oyane＇s fracture criterion was used to develop a theory to study P/M prod-ucts. The least square method was used to determine the constants in fracture criteria and these equations were even- tually used to construct workability diagram. It is found that the proposed method was well in agreement with the experimental results.
S Narayan , A Rajeshkannan , K S Pandey, S Shanmugam （1. School of Engineering and Physics, Faculty of Science, Technology and Environment, University of South Pacific, Suva 1168, Fiii; 2. Department Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India; 3. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India）
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ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(13)60167-3