Influence of Plastic Deformation on Low-Temperature Surface Hardening of Austenitic Stainless Steel by Gaseous Nitriding

2015 ◽  
Vol 46 (6) ◽  
pp. 2579-2590 ◽  
Author(s):  
Federico Bottoli ◽  
Grethe Winther ◽  
Thomas L. Christiansen ◽  
Marcel A. J. Somers
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Low Temperature ◽  
Surface Hardening ◽  
Gaseous Nitriding ◽  
Temperature Surface

New Stainless Steel Alloys for Low Temperature Surface Hardening?

2015 ◽  
Vol 160 (9) ◽  
pp. 406-412 ◽  
Author(s):  
Thomas L. Christiansen ◽  
Kristian V. Dahl ◽  
Marcel A. J. Somers
Keyword(s):  
Stainless Steel ◽  
Low Temperature ◽  
Surface Hardening ◽  
Steel Alloys ◽  
Temperature Surface

Surface Hardening of Austenitic Stainless Steel by Explosive Treatment

2015 ◽  
Vol 812 ◽  
pp. 107-111
Author(s):  
Tünde Kovacs-Coskun ◽  
Peter Pinke
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Strain Rate ◽  
Vickers Hardness ◽  
Surface Hardening ◽  
High Rate ◽  
Hardness Tester

Specimens of austenitic stainless steel hardness changing were tested. The used hardening technology was a modified explosive treatment. During the hardening tests the explosive exploded different distance from surface. Same setup was tested with 2, 3 and 4 mm holder. The hardness improving and the plastic deformation were different as function of the holder size. The hardness was measured by Vickers hardness tester. The amount of strain induces martensite was detected magnetically. It can suppose that the microstructure changed during high rate strain. Results showed that the strain rate and result hardness depend on the holder size. We found that the bigger holder size in case of the tested setup provoke higher hardening. To determine the hardness properties it’s important to use an optional setup.

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