Determination of fatigue lifetimes with a micromechanical short crack model for the high-strength steel SAE 4150

2021 ◽  
pp. 106621
Author(s):  
Erik Natkowski ◽  
Petra Sonnweber-Ribic ◽  
Sebastian Münstermann
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Short Crack ◽  
Crack Model

scholarly journals Experimental determination of continuous cooling transformation diagram for high strength steel X153CrMoV12

2021 ◽  
Vol 16 (1) ◽  
pp. 19-24
Author(s):  
Michal Krbaťa ◽  
◽  
Róbert Cíger ◽  
Keyword(s):  
Experimental Data ◽  
Heat Treatment ◽  
High Strength Steel ◽  
Microstructural Analysis ◽  
High Strength ◽  
Cooling Curves ◽  
Treatment Mode ◽  
Heat Treatment Mode ◽  
Continuous Cooling Transformation Diagram

The article is a continuation of the article ,DILATOMETRIC ANALYSIS OF COOLING CURVES FOR HIGH STRENGTH STEEL X153CrMoV12”, which deals with the phase transformations of tool steel X153CrMoV12. The experimental data obtained was used to evaluate the resulting CCT diagram, which consists of seven dilation curves. All experimental samples from dilatometric analyses were then subjected to microstructural analysis and hardness measurements to characterize the microstructure and hardness for each heat treatment mode tested. AFM microscopy was also used to study the carbides present in steels and their size and shape for all selected cooling modes.

Ermüdung von Schweißverbindungen höher- und hochfester warmgefertigter nahtloser Stahlbauhohlprofile MSH/Fatigue of Welded Connections at Hot Finished Higher Strength or High Strength Hollow Sections

Konstruktion ◽  
2018 ◽  
Vol 70 (01-02) ◽  
pp. 76-81
Author(s):  
Bernd Kranz ◽  
Jörg Herrmann ◽  
Ronny Baum ◽  
Boris Straetmans
Keyword(s):  
Fatigue Strength ◽  
Boundary Conditions ◽  
Fatigue Test ◽  
High Strength Steel ◽  
High Strength ◽  
Machine Construction ◽  
Hollow Section ◽  
Steel Grades ◽  
Additional Reference

Inhalt: Dauerfestigkeit geschweißter Hohlprofilkonstruktionen ist für viele Anwendungen im Maschinenbau relevant. Für Schweißverbindungen höher- und hochfester Hohl- profilwerkstoffe gibt es aber nur eine begrenzte Anzahl verfügbarer Angaben. Ziel der vorliegenden Untersuchung an drei höher- und hochfesten Werkstoffen ist die Ermittlung von Wöhlerlinien bei unterschiedlichen Verarbeitungsrandbedingungen. Konkret wurden dazu konventionelle MSG Schweißverbindungen an bauteilähnlichen Proben ohne und mit Nahtvorbereitung sowie mit Nahtvorbereitung und Vorwärmen hergestellt und Ermüdungsversuchen unterzogen. Konstrukteuren und Verarbeitern dienen diese als weitere Referenz zur optimalen Nutzung der vorgestellten Verbindungen und Werkstoffe.   Abtract: Fatigue strength of welded hollow section designs is relevant for many applications in machine construction. For welded connections of higher strength or high strength hollow sections only a limited amount of data is available. Objective of the present research on three higher strength or high strength steel grades is the determination of Wöhler curves for different boundary conditions for processing. In practice components of conventionally GMAW welded-connections had been manufactured, without weld preparation, with weld preparation and with weld preparation and preheating – subsequently a fatigue test was done. Results serve designers and manufacturers as additional reference for optimized use of the presented joints and steel grades.

Determination of low niobium content ( 0,01–0,1 wt.%) in high-strength steel

2016 ◽  
pp. 3-3
Author(s):  
N.V. Gundobin ◽  
◽  
V.I. Titov ◽  
L.V. Pilipenko ◽  
◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Niobium Content

The Determination of Friction Coefficient between Parallel Wires in Stay Cables

2013 ◽  
Vol 351-352 ◽  
pp. 250-253 ◽  
Author(s):  
Hong Li
Keyword(s):  
Friction Coefficient ◽  
High Strength Steel ◽  
Steel Wire ◽  
High Strength ◽  
Pressure Increase ◽  
Positive Pressure ◽  
Stay Cables ◽  
Steel Wires ◽  
Bending Stresses

To measure and determine the friction coefficients of steel wires accurately is one of the prerequisite for analysing the local bending stresses in staycables. Three test schemes to simulate the real working state of the steel wire, the test value and its variation trend shows that the friction coefficient of high-strength steel wires decreases with the pressure increase, and then becomes stable when the positive pressure is too large.

Sign in / Sign up

Export Citation Format

Share Document