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Volume 9 (2009): Issue 4 (December 2009)

Volume 9 (2009): Issue 3 (September 2009)

Volume 9 (2009): Issue 2 (June 2009)

Volume 9 (2009): Issue 1 (March 2009)

Volume 8 (2008): Issue 4 (December 2008)

Volume 8 (2008): Issue 3 (September 2008)

Volume 8 (2008): Issue 2 (June 2008)

Volume 8 (2008): Issue 1 (March 2008)

Journal Details
Format
Journal
eISSN
2083-4799
ISSN
1730-2439
First Published
23 Sep 2008
Publication timeframe
4 times per year
Languages
English

Search

Volume 9 (2009): Issue 4 (December 2009)

Journal Details
Format
Journal
eISSN
2083-4799
ISSN
1730-2439
First Published
23 Sep 2008
Publication timeframe
4 times per year
Languages
English

Search

3 Articles
Open Access

Underwater welded joint properties investigation

D. Fydrych and
D. Fydrych and
T. Kozak
T. Kozak
Published Online: 22 Jan 2010
Page range: 4 - 14

Abstract

Underwater welded joint properties investigation

Macroscopic and microscopic examinations of implant joints made under water have been performed. The investigations results indicate that in HAZ of the tested joints a formation of brittle structures has occurred. The brittle structures are responsible for an increase of susceptibility to cold cracking of high strength low alloy steel. An analysis of hardness penetration patterns of implant joints also indicates an adverse effect of water environment on weldability of steel.

Keywords

  • underwater welding
  • local cavity
  • implant test
Open Access

Microstructure and properties of the cobalt base clad layers after long time service

H. Smoleńska and
H. Smoleńska and
W. Kończewicz
W. Kończewicz
Published Online: 22 Jan 2010
Page range: 15 - 20

Abstract

Microstructure and properties of the cobalt base clad layers after long time service

The cobalt base laser cladding layers were investigated after two years of service in two laboratory diesel engines. The microstructures of the clads after service did not demonstrated serious degradation process. Chemical compositions of the used layers and changes in hardness were described. These sorts of layers are suitable for long time service with out substantial damages.

Keywords

  • cobalt base alloy
  • laser cladding
  • wear
Open Access

Influence of laser remelting at cryogenic conditions on corrosion resistance of non-ferrous alloys

A. Zieliński,
A. Zieliński,
W. Serbiński,
W. Serbiński,
B. Majkowska,
B. Majkowska,
M. Jażdżewska and
M. Jażdżewska and
I. Skalski
I. Skalski
Published Online: 22 Jan 2010
Page range: 21 - 28

Abstract

Influence of laser remelting at cryogenic conditions on corrosion resistance of non-ferrous alloys

The main reason for laser remelting of the components made of aluminium, copper and titanium alloys is to obtain high hardness and corrosion resistance at the surface for longer lifetime as result of the rapid solidification. The final microstructure, phase composition and properties of aluminium, copper and titanium alloys depend on the laser process parameters and obviously on the nature of the equilibrium system.

The effect of laser surface remelting at cryogenic conditions on the microstructure and corrosion characteristics of the AlSi13Mg1CuNi, SUPERSTON and Ti-6Al-4V alloys are presented. The beneficial effects of laser treatment on the microstructure and corrosion behaviour of those alloys used for different products are observed.

Keywords

  • aluminium
  • copper and titanium alloys
  • laser treatment
  • corrosion
3 Articles
Open Access

Underwater welded joint properties investigation

D. Fydrych and
D. Fydrych and
T. Kozak
T. Kozak
Published Online: 22 Jan 2010
Page range: 4 - 14

Abstract

Underwater welded joint properties investigation

Macroscopic and microscopic examinations of implant joints made under water have been performed. The investigations results indicate that in HAZ of the tested joints a formation of brittle structures has occurred. The brittle structures are responsible for an increase of susceptibility to cold cracking of high strength low alloy steel. An analysis of hardness penetration patterns of implant joints also indicates an adverse effect of water environment on weldability of steel.

Keywords

  • underwater welding
  • local cavity
  • implant test
Open Access

Microstructure and properties of the cobalt base clad layers after long time service

H. Smoleńska and
H. Smoleńska and
W. Kończewicz
W. Kończewicz
Published Online: 22 Jan 2010
Page range: 15 - 20

Abstract

Microstructure and properties of the cobalt base clad layers after long time service

The cobalt base laser cladding layers were investigated after two years of service in two laboratory diesel engines. The microstructures of the clads after service did not demonstrated serious degradation process. Chemical compositions of the used layers and changes in hardness were described. These sorts of layers are suitable for long time service with out substantial damages.

Keywords

  • cobalt base alloy
  • laser cladding
  • wear
Open Access

Influence of laser remelting at cryogenic conditions on corrosion resistance of non-ferrous alloys

A. Zieliński,
A. Zieliński,
W. Serbiński,
W. Serbiński,
B. Majkowska,
B. Majkowska,
M. Jażdżewska and
M. Jażdżewska and
I. Skalski
I. Skalski
Published Online: 22 Jan 2010
Page range: 21 - 28

Abstract

Influence of laser remelting at cryogenic conditions on corrosion resistance of non-ferrous alloys

The main reason for laser remelting of the components made of aluminium, copper and titanium alloys is to obtain high hardness and corrosion resistance at the surface for longer lifetime as result of the rapid solidification. The final microstructure, phase composition and properties of aluminium, copper and titanium alloys depend on the laser process parameters and obviously on the nature of the equilibrium system.

The effect of laser surface remelting at cryogenic conditions on the microstructure and corrosion characteristics of the AlSi13Mg1CuNi, SUPERSTON and Ti-6Al-4V alloys are presented. The beneficial effects of laser treatment on the microstructure and corrosion behaviour of those alloys used for different products are observed.

Keywords

  • aluminium
  • copper and titanium alloys
  • laser treatment
  • corrosion