Why austempered can have higher toughness than quenched and tempered in steel , though both have same hardness? (ASM Metals Handbook,Vol. 4 ). Thank you.
What’s the fatigue propagation mechanism of ductile and brittle steel ,from the view of physical metallurgy? Thank you very much.
04 May 2017 7,313 2 View
what's physical meaning of fatigue endurance limit? how to calculate or estimate fatigue crack initiation life?
11 December 2016 7,632 0 View
in the plain strain state definition, the Z-direction has stress ,but no strain. is it possible a direction have stress but no strain? likewise, for the plane stress state, there has strain ,but...
10 November 2016 7,411 0 View
low-alloy steel(0.4C-1.4Cr-1.0Al-0.35Mo) ,carbonitriding at 860℃ about 4 hours,quenching and 190℃ tempering .carbon potential and nitrogen potential are 0.75 and 0.2 respectively. Enclosed file...
09 October 2016 6,999 0 View
What’s the Griffith crack length in high-carbon martensite or plate martensite?In quench martensite ,there is no carbide which need tempering to produce carbide precipitation, then what’s the...
09 October 2016 6,886 2 View
what effects temper martensite embrittlement have on fatigue crack nucleation and propagation?
09 October 2016 10,087 26 View
How can calculate fracture load of three-point bending testing through strength and ductility data obtained from tensile testing? and in three-point bending testing ,how to calculate stress...
08 September 2016 6,682 4 View
Will the crack shape and crack tip radius affect KⅠc value and R-Curve? and why ? Thank you for your answers.
08 September 2016 524 53 View
In some steels,is it possible the cleavage fracture happens after large amount of elongation in the uniaxial tension test of intact sample?
07 August 2016 8,407 9 View
What’s the micro-mechanism of cleavage in uniaxial tension test of intact steel sample?→the microcrack forms when the tensile stress exceed cleavage stress, then propagate immediately.Or:→the...
07 August 2016 3,920 0 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...
08 August 2024 719 0 View
I have modelled a steel structure using beam elements in Abaqus and attached to this structure reinforced concrete slab. The analysis that I am making is heat transfer of the structure. The...
07 August 2024 1,028 0 View
Reference dose and Maximum acceptable concentrations HMs
03 August 2024 8,230 4 View
Suggest one of them 1. Teflon-lined stainless steel autoclave: 2. Alumina (Al2O3) ceramic container
30 July 2024 7,326 1 View
The catalytic effect of retained austenite refers to the phenomenon wherein quenching steels with a small amount of retained austenite, when subjected to tempering at a specific temperature...
27 July 2024 8,508 0 View
Please investigate the effect of temperature and strain rate of hot deformation and the formation of delta ferrite in martensitic stainless steel 410?
25 July 2024 9,408 0 View
I have tried to saturate ferritic steel with hydrogen using the electrolytic method and H2SO4. However, the effect was very poor even after 3 days of "saturation". Can anybody help in choosing a...
24 July 2024 4,393 2 View
I am simulating interlocking / dry stacked masonry in Abaqus. I am using a friction coefficient of 0.6 for my model as it is stated in the previous research as well as in the base paper. The...
16 July 2024 5,047 0 View
In the expression for solid solution strengthening model that has been widely used in the literature use a linear form consisting of strength coefficient, and concentration of elements in wt.%....
11 July 2024 4,476 3 View