The forming conditions of epsilon and alpha martensite?

Does anyone know the forming conditions of epsilon and alpha martensite? Thank you.

03 April 2016 7,037 3 View

Does anyone know the forming mechanism of the annealing twins in austenitic steels after annealing treatment?

Does anyone know the forming mechanism of the annealing twins in austenitic steels after annealing treatment?

03 April 2016 7,681 1 View

Does anyone know the method of changing the as-welded columnar austenite microstructure into equiaxed austenite microstructure?

Does anyone know the method of changing the as-welded columnar austenite microstructure into equiaxed austenite microstructure in the weld metal of the austenitic steel? Thank you.

02 March 2016 3,995 4 View

Does anyone know the differences of the resistance spot weldability of the galvanized and galvanneal steel sheets?

Does anyone know the differences of the resistance spot weldability of the galvanized and galvanneal steel sheets? The electric resistances of the Zn layer on galvanized steel sheet and the Zn-Fe...

02 March 2016 6,888 1 View

How to confirm the deformation mechanism of spot welds with different Mn contents?

31 December 2015 1,599 3 View

Does anyone know the effect of Mn on the stacking fault energy of austenite in steel, and how to measure the stacking fault energy of austenite?

Does anyone know the effect of Mn on the stacking fault energy of austenite in steel, and how to measure the stacking fault energy of austenite? Thank you.

31 December 2015 7,008 2 View

Does anyone know the effect of Mn content on the transformation of austenite to martensite in high Mn steel during deformation process?

Does anyone know the effect of Mn content on the transformation of austenite to martensite in high Mn steel during deformation process? For the high Mn steel with full austenite microstructure,...

09 October 2015 889 5 View

What is the effect of Al on diffusion of H in steel?

09 October 2015 6,571 3 View

Can anyone tell me the differences among the three nugget diameters along the three interfaces in the four-layer resistance spot welds?

For the four-layer resistance spot welds, there are three interfaces in the spot welds, namely two side interfaces and one center interface. The nugget diameters along the two side interfaces are...

02 March 2015 191 1 View

What will happen if the steels were quenched for more than one time?

For high strength steels, fully austenite microstructure can be obtained when the steels were quenched from the temperatures above the austenitizing temperature. If we conduct the quenching...

31 December 2014 6,967 19 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

I need to accelerate corrosion in steel parts that are used in a salt-water environment. Is there a technique for doing so?

I have a structure that employs d-ring swiveling tie-downs that corrode during use and become "frozen". I have sample swivel assemblies that I wish to corrode to see if I can free them using one...

01 March 2021 3,739 3 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

What are effects of steel jacketing on flexural strength?

Dear all, If steel jacketing is used to retrofit a reinforced-concrete (RC) column, can we use it to improve flexural strength? I understand that we leave gaps between the ends of the jacket and...

22 February 2021 1,906 5 View

How to model steel jackets using SeismoStruct?

Hi all, Does SeismoStruct support modeling rectangular RC columns retrofitted with steel jackets (e.g. rectangular, elliptical) ? Any suggestions for other software (apart from...

20 February 2021 4,521 1 View

Thermal and mechanical properties of concrete and steel after cooling?

How do the thermal conductivity, specific heat capacity, plastic strain, critical compressive displacement, and thermal expansion of both hot-rolled steel and concrete change after cooling based...

15 February 2021 1,385 5 View