Investigation of nanomechanical properties and thermal fatigue resistance of gray cast iron processed by laser alloying

2015 ◽  
Vol 626 ◽  
pp. 260-263 ◽  
Author(s):  
Xiao Yang ◽  
Zhihui Zhang ◽  
Jintian Wang ◽  
Luquan Ren
Keyword(s):  
Cast Iron ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Laser Alloying ◽  
Thermal Fatigue Resistance ◽  
Nanomechanical Properties

Thermal fatigue characteristics of gray cast iron with non-smooth surface treated by laser alloying of Cr powder

2008 ◽  
Vol 202 (12) ◽  
pp. 2527-2534 ◽  
Author(s):  
Xin Tong ◽  
Hong Zhou ◽  
Lu-quan Ren ◽  
Zhi-hui Zhang ◽  
Ren-dong Cui ◽  
...  
Keyword(s):  
Cast Iron ◽  
Thermal Fatigue ◽  
Smooth Surface ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Laser Alloying ◽  
Fatigue Characteristics

Laser Alloying in-situ Carbide Particle Reinforced Composite Layers on the Gray Cast Iron with Ni-base Powder

Applied laser ◽  
2010 ◽  
Vol 30 (4) ◽  
pp. 249-253
Author(s):  
郑伟 Zheng Wei ◽  
马明星 Ma Mingxing ◽  
朱有慧 Zhu Youhui ◽  
张伟明 Zhang Weiming ◽  
孙康和 Sun Kanghe ◽  
...  
Keyword(s):  
Cast Iron ◽  
Gray Cast Iron ◽  
Carbide Particle ◽  
Gray Cast ◽  
Laser Alloying ◽  
Base Powder ◽  
Reinforced Composite ◽  
Composite Layers ◽  
Particle Reinforced Composite

Study on Thermal Fatigue Resistance of Non-Smooth Cast Iron Treated by Laser Surface Alloying of CrNi Powders

2011 ◽  
Vol 291-294 ◽  
pp. 1405-1411
Author(s):  
Tong Xin ◽  
Zhou Hong ◽  
Liu Min
Keyword(s):  
Cast Iron ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Laser Surface ◽  
Surface Alloying ◽  
Laser Melting ◽  
Cast Irons ◽  
Laser Surface Alloying ◽  
Thermal Fatigue Resistance

The past studies indicated that thermal fatigue resistance of cast irons could be improved by partly laser melting treatment. However the only disadvantage of this technology is that the enhancement of thermal fatigue resistance would be limited because of the fixed chemical composition of sample matrix. For this purpose, the laser surface alloying of CrNi was selected for changing both the compositions and the microstructures of laser treated zone, and the effects of alloy powder compositions on thermal fatigue behavior were also investigated in this paper. The results indicate that the alloy elements distribute homogeneously, and their contents increase markedly in the non-smooth unit on the alloyed layer. The non-smooth unit is strengthened further compared with laser melting treatment. Thermal fatigue resistance of cast iron is enhanced evidently by laser surface alloying of CrNi powders, and for all samples tested, those treated with 25%Cr-75%Ni powders have the best thermal fatigue resistance.

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