scholarly journals EVALUATION OF THE GERARD--PAPIRNO CHARACTERIZATION OF NOTCH DUCTILITY IN HIGH-STRENGTH AISI 4340 STEEL. Final Technical and Topical Report, Phase I.

1971 ◽  
Author(s):  
D. Firrao ◽  
J. W. Spretnak
Keyword(s):  
Phase I ◽  
High Strength ◽  
Aisi 4340 Steel ◽  
4340 Steel ◽  
Aisi 4340

Micromanufacturing Technology and its Practice

2020 ◽  
Vol 311 ◽  
pp. 12-20
Author(s):  
Zheng Yi Jiang ◽  
Mahadi Hasam ◽  
Hamidreza Kamali ◽  
Fang Hui Jia ◽  
Hai Bo Xie
Keyword(s):  
Time Pressure ◽  
High Strength ◽  
Fe Modelling ◽  
Aisi 4340 Steel ◽  
Bonding Parameters ◽  
Micro Deep Drawing ◽  
4340 Steel ◽  
New Material ◽  
Steel Joints ◽  
Aisi 4340

In order to make micro composite drills (Fig. 1), cemented tungsten carbide (WC-10Co) and high strength (AISI 4340) steel were successfully bonded by hot compaction diffusion bonding at a low temperature. The effects of holding time, pressure and temperature on microstructure and mechanical properties of the sintered carbides and bonding strengths of the bimetallic composites were examined, and a transitional layer was found at the interface as a result of elemental inter-diffusion. The optimal bonding parameters were determined to achieve the maximum bonding strength of 226 MPa of the WC-10Co/AISI 4340 steel joints, which is helpful in producing micro composite drills. Microforming is introduced to produce lighter and more energy effective products. In this study, Magnesium-Lithium (Mg-Li) alloy, new material in microscale, was chosen to superior formed micro-cup due to its ultralight weight with outstanding ductility. The dry and oil lubrication conditions were chosen as benchmarks to investigate effects of a novel oil-based nanoparticle lubricant in micro deep drawing (MDD) process of Mg-Li alloy. Finite Element (FE) modelling was conducted and the simulation results of the drawing force were in a good agreement with the experimental results. The formed cup quality with consideration on the surface roughness has been extensively evaluated and the results illustrated the quality improvement was substantial.

Effect of Hydrogen and Magnetic Field on the Mechanical Behavior of High Strength AISI 4340 Steel

2012 ◽  
Vol 22 (4) ◽  
pp. 1028-1034
Author(s):  
Meenakshisundaram Ramanathan ◽  
Biswadeep Saha ◽  
Chai Ren ◽  
Sivaraman Guruswamy ◽  
Michael McCarter
Keyword(s):  
Magnetic Field ◽  
Mechanical Behavior ◽  
High Strength ◽  
Aisi 4340 Steel ◽  
4340 Steel ◽  
Aisi 4340

Effect of laser clad repair on the fatigue behaviour of ultra-high strength AISI 4340 steel

2014 ◽  
Vol 606 ◽  
pp. 46-57 ◽  
Author(s):  
Shi Da Sun ◽  
Qianchu Liu ◽  
Milan Brandt ◽  
Vladimir Luzin ◽  
Ryan Cottam ◽  
...  
Keyword(s):  
High Strength ◽  
Fatigue Behaviour ◽  
Aisi 4340 Steel ◽  
4340 Steel ◽  
Aisi 4340

Ferrite-Bainite Dual Phase Structure and Mechanical Characterization of AISI 4340 Steel

2018 ◽  
Vol 5 (11) ◽  
pp. 24907-24914 ◽  
Author(s):  
B.M. Gurumurthy ◽  
Sathya Shankar Sharma ◽  
Achutha Kini
Keyword(s):  
Phase Structure ◽  
Mechanical Characterization ◽  
Dual Phase ◽  
Aisi 4340 Steel ◽  
4340 Steel ◽  
Aisi 4340

scholarly journals Surface Integrity Characterization of Hardened AISI 4340 Steel in Grinding Process with Biodegradable Formulations of Cutting Fluids

2017 ◽  
Vol 20 (2) ◽  
pp. 496-501 ◽  
Author(s):  
Cintia Braga ◽  
Leonardo Roberto da Silva ◽  
Evanilton José Alves Barbosa ◽  
Elaine Carballo Siqueira Corrêa
Keyword(s):  
Surface Integrity ◽  
Grinding Process ◽  
Cutting Fluids ◽  
Aisi 4340 Steel ◽  
4340 Steel ◽  
Aisi 4340
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