scholarly journals Effect of Pulse Electric Current Stimulation on the Microstructure, Mechanical Properties and Thermal Fatigue Behavior of Cast-hot-working Die Steel

2008 ◽  
Vol 48 (2) ◽  
pp. 212-217 ◽  
Author(s):  
Huaqiang Lin ◽  
Yuguang Zhao ◽  
Yang Zhao ◽  
Liguang Han ◽  
Jun Ma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electric Current ◽  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Hot Working ◽  
Die Steel ◽  
Pulse Electric Current ◽  
Hot Working Die Steel ◽  
Thermal Fatigue Behavior ◽  
Pulse Electric

scholarly journals Thermal Fatigue Behavior of New Type High-Cr Cast Hot Work Die Steel

2004 ◽  
Vol 44 (6) ◽  
pp. 1103-1107 ◽  
Author(s):  
Q. C. Jiang ◽  
H. L. Sui ◽  
Q. F. Guan
Keyword(s):  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Die Steel ◽  
New Type ◽  
Thermal Fatigue Behavior ◽  
Hot Work Die

scholarly journals Effect of a Current Pulse on the Thermal Fatigue Behavior of Cast Hot Work Die Steel

2005 ◽  
Vol 45 (3) ◽  
pp. 410-412 ◽  
Author(s):  
Y. G. ZHAO ◽  
Y. H. LIANG ◽  
W. ZHOU ◽  
Q. D. QIN ◽  
Q. C. JIANG
Keyword(s):  
Current Pulse ◽  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Die Steel ◽  
Thermal Fatigue Behavior ◽  
Hot Work Die ◽  
A Current

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.

Thermal fatigue behavior of 3Cr2W8V die steel with biomimetic non-smooth surface

2006 ◽  
Vol 433 (1-2) ◽  
pp. 144-148 ◽  
Author(s):  
H. Zhou ◽  
Y. Cao ◽  
Z.H. Zhang ◽  
L.Q. Ren ◽  
X.Z. Li
Keyword(s):  
Thermal Fatigue ◽  
Smooth Surface ◽  
Fatigue Behavior ◽  
Die Steel ◽  
Thermal Fatigue Behavior

scholarly journals EFFECT OF ELECTRIC CURRENT PULSE ON MECHANICAL PROPERTIES OF ULTRA-HIGH STRENGTH STEEL 1180CP

2018 ◽  
Vol 54 (5A) ◽  
pp. 82
Author(s):  
Nguyen Trung Thien
Keyword(s):  
Mechanical Properties ◽  
Electric Current ◽  
High Strength Steel ◽  
Uniform Elongation ◽  
High Strength ◽  
Single Pulse ◽  
Experimental Result ◽  
Pulse Electric Current ◽  
Ultra High Strength Steel ◽  
Pulse Electric

Effect of the pulse electric current on mechanical properties of an ultra-high strength steel (UHSS) is experimentally investigated. A single pulse of electric current with a short duration of 0.36 sec is applied to the specimen under tensile plastic loading. The experimental result showed that flow stress of the UHSS nearly instantly drops at moment of electric current, following strain hardening until necking of the specimen. Uniform elongation completely depends on the pulsing strain, while ultimate tensile strength slightly changes after electric current.

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