Surface Modification of AISI-4620 Steel With Intense Pulsed Ion Beams

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Description

A 300-keV, 30-kA, 1-{micro}s intense beam of carbon, oxygen, and hydrogen ions is used for the surface treatment of AISI-4620 steel coupons, a common material used in automotive gear applications. The beam is extracted from a magnetically-insulated vacuum diode and deposited into the top 1 {micro}m of the target surface. The beam-solid interaction causes a rapid melt and resolidification with heating and cooling rates of up to 10{sup 10} K/sec. Treated surfaces are smoothed over 1-{micro}m scale-lengths, but are accompanied by 1-{micro}m diameter craters and larger-scale roughening over >=10 {micro}m, depending on beam fluence and number of pulses. Treated surfaces ... continued below

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Medium: P; Size: vp.

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Rej, D.J.; Davis, H.A.; Nastasi, M.; Olson, J.C.; Peterson, E.J.; Reiswig, R.D. et al. September 1, 1996.

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Description

A 300-keV, 30-kA, 1-{micro}s intense beam of carbon, oxygen, and hydrogen ions is used for the surface treatment of AISI-4620 steel coupons, a common material used in automotive gear applications. The beam is extracted from a magnetically-insulated vacuum diode and deposited into the top 1 {micro}m of the target surface. The beam-solid interaction causes a rapid melt and resolidification with heating and cooling rates of up to 10{sup 10} K/sec. Treated surfaces are smoothed over 1-{micro}m scale-lengths, but are accompanied by 1-{micro}m diameter craters and larger-scale roughening over >=10 {micro}m, depending on beam fluence and number of pulses. Treated surfaces are up to 1.8 x harder with no discernible change in modulus over depths of 1 {micro}m or more Qualitative improvements in the wear morphology of treated surfaces are reported.

Physical Description

Medium: P; Size: vp.

Notes

OSTI as DE00758325

Source

  • 10th Intern. Conf. on Ion Beam Modification of Materials, Albuquerque, NM (US), 09/01/1996--09/06/1996

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  • Report No.: LA-UR-96-3118
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 758325
  • Archival Resource Key: ark:/67531/metadc709197

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  • September 1, 1996

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  • Sept. 12, 2015, 6:31 a.m.

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  • May 6, 2016, 2:04 p.m.

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Rej, D.J.; Davis, H.A.; Nastasi, M.; Olson, J.C.; Peterson, E.J.; Reiswig, R.D. et al. Surface Modification of AISI-4620 Steel With Intense Pulsed Ion Beams, article, September 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc709197/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.