shotpeening and residual stress relaxation
shotpeening and residual stress relaxation
(OP)
Hello,
I have shotpeened specimen (AISI 316 Ti), I performed XRD residual stress measurements after 1000, 10 000, 50 000, 100 000, 5 mil ... cycles (load 430MPa).
I noticed not very smooth relaxation curve, but after 10 000 cycles the residual stress rapidly decrease and then after 100 000 cycles increase.
Could someone say why this is happening?
Thanks
I have shotpeened specimen (AISI 316 Ti), I performed XRD residual stress measurements after 1000, 10 000, 50 000, 100 000, 5 mil ... cycles (load 430MPa).
I noticed not very smooth relaxation curve, but after 10 000 cycles the residual stress rapidly decrease and then after 100 000 cycles increase.
Could someone say why this is happening?
Thanks





RE: shotpeening and residual stress relaxation
RE: shotpeening and residual stress relaxation
Ted
RE: shotpeening and residual stress relaxation
Link to Metal Improvement Company discuss the maximum stress that can be achieved.
If I recall correctly one of Dr David Kirk's papers discusses results similar to what you are seeing.you are seeing
h
http://www.metalimprovement.com/shot_peening.php