Results 81 to 90 of about 111,808 (361)

Fully articulated four-point-bend loading fixture [PDF]

, 1991
A fully articulated four-point bend loading fixture for Modulus of Rupture (MOR) and fracture toughness specimens utilizes an upper loading plate in combination with a lower loading plate.
Calomino, Anthony M.
core   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Mechanisms of rolling contact spalling [PDF]

The results of a study aimed at analyzing the mechanical material interactions responsible for rolling contact spalling of the 440 C steel, high pressure oxygen turbopump bearings are presented.
Bhargava, V., Hahn, G. T., Kulkarni, S. M., Kumar, A. M., Rubin, C. A.   +4 more
core   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Turning hardened steel using coated carbide at high cutting speeds [PDF]

, 2008
The present work studies some aspects of the turning process applied on hardened steel using multilayer coated carbide tools at high cutting speeds. The influence of cutting parameters (vc, f, and depth of cut - d.o.c.) on tool temperature, tool wear ...
ANEIRO, Federico M., BRANDÃO, Lincoln C., COELHO, Reginaldo T.   +2 more
core   +1 more source

Evaluation of Plasticity and Creep Parameters From Tensile Stress–Strain Data for a Range of Strain Rates

Advanced Engineering Materials, EarlyView.
This plot compares experimental tensile stress–strain curves (with 4 different strain rates) and corresponding modelled curves (obtained using the optimised sets of Voce and Miller–Norton parameter values shown). The inferred M‐N values, characterizing the creep, are very similar to those obtained via conventional creep testing.
S. Ooi, R. P. Thompson, T. W. Clyne
wiley   +1 more source

Physical and Mechanical Bases of Alloyed Steel Deformation and Distortion of Large Case-Hardened Gear Wheels at the Production and Service

Механика машин, механизмов и материалов, 2007
The features of accuracy ensuring at the production of large case-hardened gear wheels connected with change of their dimensions conditioned with structure transforming into chrome-nickel alloy steel at the technological treatment and service.
P.L. Mariev, V.I. Moiseenko, D.I. Kharitonchik, E.M. Tcutcurkin, N.D. Shkatulo   +4 more
doaj  

Effects of Vacuum-Carburizing Conditions on Surface-Hardened Layer Properties of Transformation-Induced Plasticity-Aided Martensitic Steel

Metals, 2017
The effects of carbon potential in vacuum-carburization on the surface-hardened layer properties of the 0.2%C-1.5%Si-1.5%Mn-1.0%Cr-0.05%Nb transformation-induced plasticity-aided martensitic steel were investigated for the fabrication of precision gears.
Koh-ichi Sugimoto, Tomohiko Hojo, Yuta Mizuno   +2 more
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Actual Science Problems of Modern Geomechanics for Conditions of Republic of Belarus

Механика машин, механизмов и материалов, 2007
The features of accuracy ensuring at the production of large case-hardened gear wheels connected with change of their dimensions conditioned with structure transforming into chrome-nickel alloy steel at the technological treatment and service.
M.A. Zhuravkov
doaj