Shivraj SINGH Kasana

22 Questions 41 Answers 0 Followers

Questions related from Shivraj SINGH Kasana

How we can increase the strain harednability of C250 maraging steel to improve its high strain rate properties?

Experiment is about tuning of microstructure of low carbon/carbon less martensite with various amounts of reverted austenite by controlling aging temperature and times.

11 April 2022 381 0 View

How much strain rate of deformation is necessary in hot forging of Austenitic stainless steel to achieve complete recrystallization and fine grain?

Austenitic stainless steels are prone to coarse and mixed grain size after hot working by forging or rolling untill forging start and finish temperature and final pass strain rate are...

07 December 2021 6,372 2 View

How much change in hot and cold formability will be there if alloys with poor fomabilty is forged or rolled under vacuum?

Some of alloy steels and superalloys have very small forging window and one faces problem of cracking during hot forging and rolling and are preferentially isothermally forged.It could be...

28 January 2020 2,745 2 View

What shall be effect of strand EMS on SDAS and denderites cell size in high speed steel M2 continuous casting?

In high speed steel M2 grade used for making tools like drills, rimmers and threading taps, two things are of paramount importance; 1. Primary carbides 2. Cell size both of these are resulting...

05 August 2019 3,097 0 View

How to avoid under riser cracks in 40 ton P92 casting?

Even after following specified heat treatment from knock out to final HT ,delayed intergranular cracks observed under all riser cutting locations and near chills in 40 ton P92 castings.What are...

04 August 2019 5,756 9 View

What microstructural and physical changes will happen if high hardenability steel sample after quenching is kept for self aging for six months?

To study the effect of self aging in low alloy medium carbon steels and high chromium air hardening martensitic stainless steels, various steel grade samples are under study in my research...

31 July 2019 3,114 6 View

15-5Ph, steel shafts get longitunally cracked in processing , can some one suggest remedy?

Cracking in 15-5Ph precipitation hardening stainless steel in cast electrode,, ESR/VAR ingot , post forging cooling and heat treatments in industrial manufacturing of forged semis .Precautions...

31 July 2019 382 1 View

Liquidus temperature of 21-4N austenitic exhaust valve steel?

This grade of steel has following composition; carbon 0.48-0.58% Mn 8.00-10.00% Si 0.25 max Cr 20.00-22.00% Ni 3.50-4.50% N...

01 April 2019 6,613 0 View

What is state of art in titanium stablized heat resistant austenitic stainless steel?

Greetings of the day to all fellow researchers; I am trying to design and develop titanium stablized AISI 321H for nuclear application with good high temperature yield strength and creep strength

02 July 2018 5,149 3 View

How we can control precipitation of intermetallic phases and precipitates during forging of 321H austenitic stainless steel?

High temperature yield strength, good structural stability during high temperature application and delta ferrite are basic requirements for 321H austenitic steel for nuclear reactors. A...

28 June 2018 9,898 0 View

How we can determine critical temperatures like ac1,ac3,Ms Mf and liquidus temperature of a steel alloy by thermo mechanical simulator?

In my experimental alloy I want to calculate the actual critical temperatures of alloy steel like ac1.ac3.Bs. Bf, Ms,Mf,liquidus and solidus temperature by TMS GLEEBLE 3800.This will help me in...

16 May 2018 6,479 7 View

How we can reduce delta ferrite formation in martensitic stainless steels used in making steam and gas turbine blades?

Delta ferrite to the extent of upto 3% in turbine blade steel grades like X222CrMoV121, K9A62C and some other grades.When finish machined turbine blades are checked for surface defects by LPT...

08 May 2018 7,218 3 View

We are using HHA steel plate with hard armor and soft armor panels to resist ballistic test by hard steel core projectile can someone tell is it ok?

In construction of bullet proof jacket 600 BHN quenched and tempered low alloy UHSS steel sheet of 3mm thickness is used in strike face followed by HAP and SAP made by high density polyethelene...

19 February 2018 3,439 0 View

How iron base super alloys are made and processed?

I am associated with development of a high temperature iron base super alloy with following chemistry ; carbon 0.04 max Mn 0.50max Si 0.50max Cr 14.5 Ni 31.0 Ti 2.7 Mo 0.7 Al 1.9 Nb 0.70 we are...

12 February 2018 7,650 2 View

Dear fellow researchers can anybody guide me about forging and heat treatment of 30-15 lean superalloy?

I am associated with development of this 30% nickel super alloy which is being manufactured by Carpenter

03 February 2018 7,198 1 View

When calculating Ms and Bs temperature of an hypereutectoid low alloy steel Ifound that Ms and Bf temperatures are different why so?

In absence of dilatometer and other facilities I wish to estimate my heat treatment temperature by emperical formulae available but find difference of about 84 deg.C in Bf and Ms,what should Ido?

22 January 2018 2,150 0 View

If warm bending of high hardness armor sheets are bended ,can some body tell how much time plates should be heated before warm bending?

Required for my project

18 January 2018 2,471 2 View

Comparison of mechanical properties of forged and counter pressure casting AK6 aluminium alloys ?

AK6 is a forgeable high strength aluminium alloy and used for manufacturing wheel of main battle tank (MBT) by forging from cast ingots and by counter pressure casting process,I wish to know the...

01 December 2017 743 1 View

whether ultra high strength steels more than 2500 Mpa tensile strength possible to manufacture using ODS(oxide dispersion strengthening ) ?

I wish to explore possibility of designing a very high strength ,hardness and ductility UHSS for Armor protection with reduced weight.

08 November 2017 3,757 1 View

Dynamic properties of ultra high strength steel with benchmark static and quasi-static mechanical properties?

Dynamic properties at very high strain rate are important for aero space and armor protection , please share if you have checked in your project and also the chemical composition taken in experiments?

07 October 2017 2,703 1 View

How strain hardening capacity of nano bainitic UHSS can be increase for very high strain rate regime?

We use kolski split preesure bar experment for to determine high strain rate deformation of materials .I wish to design an alloy steel with very high hardness and yield and tensile strength...

02 October 2017 3,200 3 View

Which base alloys are considered in project for ferrite functional properties?

Alloy composition Alloy intended properties characterization methods and techniques likely to be used

27 September 2017 466 0 View