ExplosiveTreatment Effect on Structure and Properties of (gamma+epsilon) Alloy on the Basis of Fe-Mn-Solid Solution

Borys M. Efros 3Natalya V. Shishkova 3V. V. Milyavskiy 1Natalya B. Efros 3Anatolii I. Deryagin 2

1. High Energy Density Research Center SA, IVTAN RAS, Izhorskaya 13/19, Moscow 127412, Russian Federation
2. Russian Academy of Sciences, Ural Division, Institute of Metal Physics, 18 S.Kovalevskaya str., GSP-170, Ekaterinburg 620219, Russian Federation
3. National Academy of Sciences of Ukraine, A.Galkin Donetsk Institute for Physics & Technology (DonPTI NASU), Roza Luxemburg 72, Donetsk 83114, Ukraine

Abstract

The samples of Fe77.95Mn20Si2C0.05 alloy were quenched in water (from T=9500C) and were subjected to explosive treatment, created by explosive missile device evolving the pressure pulse ~45 GPa during 1 s. The extremely energy densities, high pressures, shear stresses at explosive treatment could initiate the various chemical reactions or phase transitions. Magnetometry methods allowing to fix and to run down even insignificant concentration changes of α -phase were used.
The initial samples without explosive treatment contain 0.7% α -phase after quenching according to hysteresis dependence of magnetization on magnetic field strength (H). The crystallites' size was estimated as about 300 nm according to coercitivity force. After explosive treatment (P=45 GPa) the ferromagnetic component in the sample becomes the smaller and with respect to magnetization corresponds to 0.2% α -phase content with crystallites' size about 150 nm. The temperature investigations with heating of samples up to 4600C result in weak decreasing of magnetization for both samples. Further heating up to T=6000C offered to determine of the Curie temperature (which runs 6500C of observed phase for both samples possible. And that was typical for α -phase.
Thus under missile explosive treatment α -phase content reduces one-third as large for Fe77.95Mn20Si2C0.05 steel with decreases of crystallites sizes. Probably this was stipulated by α -> γ inverse transformation initiated by high pressure and shear stresses.

Legal notice
  • Legal notice:

    Copyright (c) Pielaszek Research, all rights reserved.
    The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
    In every case, proper references including Author(s) name(s) and URL of this webpage: http://science24.com/paper/2102 must be provided.

 

Related papers
  1. Lipids and products of lipid peroxidation at various biomaterials implantation (clinics and experiment)
  2. Formation of BCC martensite in the stable FCC materials under severe plastic deformation
  3. Surface nanostructures and tribological properties of metallic materials
  4. Structure and properties of ultrafine grained nickel after packet hydroextrusion
  5. Electrical properties in C3N4 under high pressure
  6. Influence of Bioimplants on Immune Response
  7. Pressure Modulating Effect on ATP-ase Activity
  8. Effect of the DAC treatment on the nanomaterials of type Si-O
  9. Behaviour of Polymer Materials Under Pressure: Deformation Process, Properties and Structure Formation
  10. Effect of High Hydrostatic Pressure on Ability of Neutrophils to Phagocytize

Presentation: poster at E-MRS Fall Meeting 2004, Symposium I, by Natalya V. Shishkova
See On-line Journal of E-MRS Fall Meeting 2004

Submitted: 2004-05-13 21:41
Revised:   2009-06-08 12:55
Google
 
Web science24.com
© 1998-2021 pielaszek research, all rights reserved Powered by the Conference Engine