The thermal fatigue resistance of cast iron with biomimetic non-smooth surface processed by laser with different parameters

2006 ◽  
Vol 428 (1-2) ◽  
pp. 141-147 ◽  
Author(s):  
Hong Zhou ◽  
Xin Tong ◽  
Zhihui Zhang ◽  
Xianzhou Li ◽  
Luquan Ren
Keyword(s):  
Cast Iron ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Smooth Surface ◽  
Thermal Fatigue Resistance

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.

scholarly journals The thermal fatigue resistance of vermicular cast iron coupling with H13 steel units by cast-in process

2010 ◽  
Vol 31 (7) ◽  
pp. 3442-3448 ◽  
Author(s):  
Chengtao Wang ◽  
Hong Zhou ◽  
Peng Yu Lin ◽  
Na Sun ◽  
Qingchun Guo ◽  
...  
Keyword(s):  
Cast Iron ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
H13 Steel ◽  
Thermal Fatigue Resistance
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