what are the causes of delayed fracture in case hardened steels?
Answer Posted / siva varun
case hardened steels have compressive residual stress on the
surface which tries to close the crack resulting in delayed
fracture.
| Is This Answer Correct ? | 7 Yes | 2 No |
Post New Answer View All Answers
Which type of furnace is required in solution annealing?
What Is cold working of metals? Give some of its principal methods.
Where is iron ferrite found?
difference between sand casting and shell casting
Define what is the difference between diagrams of it and ct in heat treatment of steels?
what is the strongest metal?
I currently use 17-7 PH stainless which is hardened to condition CH after forming. raw matl is .1.75"X .12" X .008". Its main usage after hardening is silicon wafer retainer where it's contantly cycled up and down to putin and remove wafer after 40-60 sec process at 400C temp. At this high temperature this part seemed to deform after a a couple of hundred wafer which is what it was designed for in the first place. THere is a proposal to go to a different material to increase lifeline of this part. My question is..... can 321 SST be a plugin replacement. I know this has a higher temp rating but how about its forming characteristics, will it have spring properties, and wont become brittle after prolonged exposure to 400C.
How is solution annealing carried out? What type of furnace is required?
Is there a possibility of inducing stress cracking in an insulated stainless road tanker vessel (20 tonne capacity) if the vessel is subject to rapid filling (10 tonne /hr) with liquid methane (-160 c) assuming the vessel is at ambient. If so, where could I obtain suggested cooling rates?
Define what is the strongest metal?
What is combine power generation?
For define what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.
What is the melting point of e70 steel, 304,308,316 stainless steels?
Define what is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbine blades etc. When both are used in the lost-wax method?
Define what are ceramics?