Paper Title:
Effect of Solution Annealing on Microstructure and Mechanical Properties of MIM Fe-Cr-Mn-Mo-N Stainless Steels
  Abstract

The influence of solution annealing on the microstructure and mechanical properties of high nitrogen Fe-Cr-Mn-Mo-N austenitic stainless steels prepared by MIM was investigated. The results show that the solution treatment can improve the microstructure and properties of the stainless steels significantly. The sintered specimens before solution annealing consist of γ-austenite and embrittling intergranular Cr2N precipitates, showing a low mechanical property. After solid solution annealing, the specimens reveal a fully austenitic structure without any intergranular nitrides, whose tensile properties are much higher than those without solution annealing, which is attributed to the elimination of the nitride precipitation along the grain boundaries and the greater amount of nitrogen retained in solid solution. A mixed mode of intergranular and dimple fracture happen to the specimens before solid solution treatment, while a completely tough fracture of dimple happen to those after solid solution treatment.

  Info
Periodical
Advanced Materials Research (Volumes 129-131)
Edited by
Xie Yi and Li Mi
Pages
886-890
DOI
10.4028/www.scientific.net/AMR.129-131.886
Citation
D. W. Cui, "Effect of Solution Annealing on Microstructure and Mechanical Properties of MIM Fe-Cr-Mn-Mo-N Stainless Steels", Advanced Materials Research, Vols. 129-131, pp. 886-890, 2010
Online since
August 2010
Authors
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Price
$32.00
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