Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING   APRIL 2004 , Volume 17 , Number 1 (TRANSACTIONS B: APPLICATIONS); Page(s) 81 To 94.
 
Paper: 

EFFECT OF COMPOSITION AND MNS ADDITION ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF POWDER FORGED COPPER STELL PARTS

 
 
Author(s):  HAERIAN ARDAKANI A., VAHDATI KHAKI J., AMINI MASHHADI H.
 
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Abstract: 
In this work, the effects of carbon content and manganese sulfide addition on the ‎microstructure and mechanical properties of copper steel parts have been studied. ‎Steel powder mixture containing 2% Cu and different graphite contents with and ‎without MnS additions were compacted, sintered and forged to almost full density. ‎Forged samples, with near theoretical densities, were tested for tensile, hardness, ‎impact and fatigue properties. The microstructures of samples were also studied using ‎optical microscope and scanning electron microscope. It was found that increasing the ‎carbon content did not have any significant effect on fatigue properties of samples, ‎but endurance strength was reduced due to addition of MnS. Furthermore, tensile and ‎yield strength increased by increasing carbon content. Additions of manganese sulfide ‎decreased both tensile and yield strengths but significantly improved the impact ‎energy and elongation of the products‏.‏
 
Keyword(s): POWDER FORGING, COPPER STEEL, MICROSTRUCTURES, MECHANICAL PROPERTIES, MNS ADDITION
 
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