Results 71 to 80 of about 45,924 (218)

Fatigue Limit Estimation for Post‐Peened Induction‐Hardened and Tempered Steel Considering Changes in Surface Properties

Fatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 12, Page 4607-4617, December 2024.
ABSTRACT Shot peening (SP) and fine particle peening (FPP) were performed as post‐treatments on induction‐hardened and tempered AISI 4140 steels. Furthermore, the combined effects of surface characteristics including changes in surface morphology, compressive residual stress, and hardness on the fatigue limit were quantitatively examined.
Shogo Takesue, Keisuke Ono, Koichiro Nambu, Shoichi Kikuchi   +3 more
wiley   +1 more source

Influence of single- and multi-stage austempering treatments on microstructure and mechanical properties of AISI 4140 steel

Tribology and Materials
The present study examined the impact of single- and multi-stage austempering treatments on microstructural changes and the mechanical properties of AISI 4140 steel. All specimens underwent an annealing treatment before undergoing austempering treatments.
M. Badaruddin, Purnomo Diarko, D. Asmi, H. Wardono   +3 more
semanticscholar   +1 more source

Multifunctional electroless nickel boron composite coatings incorporated by magnesium diboride ceramic particles

International Journal of Ceramic Engineering &Science, Volume 6, Issue 6, November 2024.
Abstract In this study, the role of MgB2 in composite coatings is pivotal. Electroless Ni–B plating, a current‐free chemical reduction process, deposits nickel–boron coatings. Other than MgB2, reinforcements like SiC, B4C, and so forth are used with Ni–B coatings for improved properties.
Ferhat Bülbül, Adem Kara
wiley   +1 more source

Progressive Tool Wear in Cryogenic Machining: The Effect of Liquid Nitrogen and Carbon Dioxide

Journal of Manufacturing and Materials Processing, 2018
This experimental study focuses on various cooling strategies and lubrication-assisted cooling strategies to improve machining performance in the turning process of AISI 4140 steel.
Yusuf Kaynak, Armin Gharibi
doaj   +1 more source

EFFECTS OF CARBURIZING AND NITRIDING PROCESSES ON THE COST AND QUALITY OF GEARS PRODUCED WITH AISI 4140 AND 8620 STEELS [PDF]

Tecnologia em Metalurgia, Materiais e Mineração, 2012
This study compares the effects of nitriding and carburizing processes applied to gears subjected to contact stresses below 1300 MPa. The manufacturing cost, as well the depth of hardened layer and the distortion produced by two processes are analyzed.
Claudio José Leitão, Paulo Roberto Mei , Rodolfo Libard   +2 more
doaj   +1 more source

Ispitivanje čelične legure AISI 4140

, 2021
The task of the work was to investigate the steel alloy AISI 4140, to determine the chemical properties and test procedure of metallography and microstructure, and to interpret the material and mechanical properties of the selected material. A product in the Fusion 360 software program from thin-sheet metal forming technology was further designed.
openaire   +1 more source

Hardened AISI 4140 Steel Subjected to Hydrogen [PDF]

Microscopy and Microanalysis, 2021
Noé López Perrusquia, Marco Antonio Doñu Ruiz, Victor Hugo Olmos Domínguez, Jorge Victor Cortes Suarez, Jose Luis Velázquez Mendoza, David Sanchez Huitron   +5 more
openaire   +1 more source

Estimating the fatigue limits for quenched and tempered steel rods treated with multifunction cavitation considering residual stress, hardness, and surface pits

Fatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 11, Page 4000-4011, November 2024.
Abstract In this study, multifunction cavitation (MFC) was performed on low‐alloy steel (AISI 4140 steel) rods with different hardnesses to increase their fatigue limit. It was found that a high compressive residual stress was generated on the surface of steel rods by MFC and that the magnitude of the compressive residual stress tended to increase with
Shoichi Kikuchi, Keisuke Ono, Toshihiko Yoshimura, Masataka Ijiri   +3 more
wiley   +1 more source

Impact of cryogenic treatment on the performance of coated tungsten carbide inserts during machining of EN24 grade alloy steel

Engineering Reports, Volume 6, Issue 9, September 2024.
This research presents the results of cry treated and untreated P20 grade carbide inserts for machining alloy steel (EN24 grade) under continuous turning circumstances. Abstract Today's industries need to be more productive, especially those that shape and machine materials.
R. Prem Chand, T. V. Sreerama Reddy, Chandrashekar Anjinappa, B. Omprakash, Abdul Razak, Anteneh Wogasso Wodajo   +5 more
wiley   +1 more source

Boriding Effect on the Hardness of AISI 1020, AISI 1060, AISI 4140 Steels and Application of Artificial Neural Network for Prediction of Borided Layer

DÜMF Mühendislik Dergisi
Artificial neural network approach was used to predict the thicknesses of total (FeB+Fe2B), FeB and Fe2B borides layers of AISI 1020, AISI 1060, and AISI 4140 steels.
Mehmet Özer, F. Balıkoğlu, T. K. Demircioğlu, Yunus Emre Nehri   +3 more
semanticscholar   +1 more source