Thermal fatigue resistance of H13 steel treated by selective laser surface melting and CrNi alloying

2013 ◽  
Vol 271 ◽  
pp. 373-380 ◽  
Author(s):  
Xin Tong ◽  
Ming-jiang Dai ◽  
Zhi-hui Zhang
Keyword(s):  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
H13 Steel ◽  
Thermal Fatigue Resistance

Effect of Pulse Current Stimulation on Wear and Thermal Fatigue Behavior of Biomimetic H13 Steel Processed by Laser Surface Melting

JOM ◽  
2018 ◽  
Vol 70 (11) ◽  
pp. 2611-2618 ◽  
Author(s):  
Chao Meng ◽  
Zongwei Tian ◽  
Yu Kang ◽  
Xuelei Wang ◽  
Kai Sheng ◽  
...  
Keyword(s):  
Thermal Fatigue ◽  
Pulse Current ◽  
Fatigue Behavior ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
H13 Steel ◽  
Thermal Fatigue Behavior

The Microstructure and Properties of Coating from Mo2FeB2 Cermet on Surface of H13 Steel by Reactive Flame Spraying

2010 ◽  
Vol 97-101 ◽  
pp. 1321-1327 ◽  
Author(s):  
Xiao Ping Zhou ◽  
Xin Bin Hu ◽  
Yi Sheng Xu
Keyword(s):  
Wear Resistance ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Ceramic Coating ◽  
Flame Spraying ◽  
H13 Steel ◽  
Thermal Fatigue Resistance ◽  
Microstructure And Properties ◽  
Cermet Coating ◽  
Ternary Boride

The microstructure and properties of ternary boride ceramic coating prepared by reactive flame spraying on surface of H13 steel are studied as well as the microstructures, microhardness, wear resistance and thermal fatigue resistance of the coating. The results show that the Mo2FeB2 cermet coating by reactive flame spraying has good wear resistance and thermal fatigue resistance and its microhardness can even reach 1200 HV.

The thermal fatigue resistance of H13 steel repaired by a biomimetic laser remelting process

2014 ◽  
Vol 55 ◽  
pp. 597-604 ◽  
Author(s):  
Dalong Cong ◽  
Hong Zhou ◽  
Zhenan Ren ◽  
Zhihui Zhang ◽  
Haifeng Zhang ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Laser Remelting ◽  
H13 Steel ◽  
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

scholarly journals Effect of Thermal Fatigue on Microstructure and Mechanical Properties of H13 Tool Steel Processed by Selective Laser Surface Melting

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 773 ◽  
Author(s):  
Chao Meng ◽  
Chun Wu ◽  
Xuelei Wang ◽  
Jingyue Li ◽  
Rui Cao
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Thermal Fatigue ◽  
Room Temperature ◽  
Fatigue Behavior ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Melted Zone ◽  
Thermal Fatigue Behavior

Selective laser surface melting, which brings together the bionic theory and the laser process, is an effective way to enhance the thermal fatigue behavior of materials. In this study, in order to examine the relationship between the mechanical properties and thermal fatigue behavior of materials processed by selective laser surface melting, the tensile properties at room temperature and elevated temperature of treated specimens and untreated specimens after different numbers of thermal fatigue cycles were investigated and compared. Moreover, the microstructure evolution and the microhardness of the laser-affected zone were investigated after different numbers of thermal fatigue cycles. The results show that microhardness of the laser-melted zone gradually decreases with an increasing number of thermal fatigue cycles; the number of thermal fatigue cycles has little effect on the grain size in the laser-melted zone, and the percentage of low-angle grain boundaries decreases with an increasing number of thermal fatigue cycles. The strength of specimens gradually decreases, whereas the fracture elongation gradually increases with an increasing number of thermal fatigue cycles at room temperature and elevated temperature. In addition, the stress distribution on the specimen surface during tensile test was investigated using the finite element method, and the results indicate that the stress transfer exists between the laser-affected zone and the untreated zone.

scholarly journals The Influence of Laser Surface Alloying on the Thermal Fatigue Resistance of Hot Work Tool Steels

2016 ◽  
Vol 61 (3) ◽  
pp. 1309-1314 ◽  
Author(s):  
E. Jonda ◽  
Z. Brytan ◽  
K. Labisz ◽  
A. Drygała
Keyword(s):  
Surface Layer ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Laser Surface ◽  
Strengthening Effect ◽  
Surface Alloying ◽  
Tool Steels ◽  
Laser Surface Alloying ◽  
Thermal Fatigue Resistance ◽  
Hot Work Tool Steels

Abstract The paper presents results of the effect of laser surface remelting and alloying by carbides powders of NbC, TaC, TiC, VC and WC on the structure and thermal fatigue resistance of the surface layer of hot work tool steels X40CrMoV5-1 and 32CrMoV12-28. The laser surface alloying and remelting treatments was performed using a high power diode laser (HPDL ROFIN SINAR DL 020). In order to investigate the effect of applied laser treatments and used alloying powders on the microstructure and thermal fatigue resistance of processed surface layer of hot work tool steels, the microstructure evaluation by light microscopy, hardness test, and dedicated thermal fatigue resistance test were performed. The best results regarding fatigue cracks inhibition was obtained when the surface of hot work tool steels was alloyed with TiC and VC carbides at the laser beam power of 2.0 and 2.3 kW. The grain refinement effect of laser remelting has a lower impact on the thermal crack inhibition, than a strong strengthening effect of matrix saturation in alloying elements and precipitation of fine carbides in the steel matrix.

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