Interested to Buy Any Domain ? << Click Here >> for more details...
what are the causes of delayed fracture in case hardened steels?
- 4 Answers
- 7309 Views
- I also Faced
- E-Mail Answers
Answer Posted / venkat chilla
1.Due to high compressive stress on the surface and very
hard surface the neck or crack propagation on the surface is
delayed during deformation. In general the crack will be
initiated at the core of the material in normal tensile
loading at the region of internal defects and inter metallic
particles. on further increasing the load the crack will
propagate further towards out side of the surface. As the
surface is hard the crack propagation will be stoped by this
hard case and causes to delayed failure .
2. While in fatigue loading the crack will initiate at the
surface and propagate later in to core. As the hardened
surface is not allowed to initiate a crack and so delayed
failure.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What is calibration of an instrument?
What is the use of core prints?
Define what is special about the properties of chromium molybdenum steels that make them ideal for pressure vessels?
Discuss steam engines. What is its overall efficiency ?
Which liquid would oyu use to dissolve gold?
Define what is the chemical composition of ceramic and define what is its atomic density?
What is the chemical composition of ceramics?
Which metal is the best conductor of heat?
Describe strain aging based on dislocation theory?
Explain vacuum induction melting?
How to calculate heat affected zone in weld?
Define what is the different between ferrite percentage and ferrite number?
Define what is the minimum temperature for stress relieving of astm a 519 gr.4130 material and please tell us where we can find the location.
What is the chemical composition of ceramic and what is its atomic density?
what is the metallurgy use?
