Novel material search. High fatigue resistance, deformable
Novel material search. High fatigue resistance, deformable
(OP)
I am searching for a novel material. The material must bend and deform similarly to a ductile metal (picture bending a rod of lead or copper)The material must retain the new shape after deformation until such a time as it is re-positioned by bending into a new shape. This material has to be able to withstand at least 5 million bending cycles before suffering fatigue failure. A certain small percentage of elastic spring back is acceptable (< aprox 8%) as is a slight degradation of physical properties over the 5 million cycle life span of the material
any suggestions would be greatly appreciates
any suggestions would be greatly appreciates





RE: Novel material search. High fatigue resistance, deformable
RE: Novel material search. High fatigue resistance, deformable
There are materials like silly putty that have unlimited malleability (at low strain rates), but these also tend to cold flow/creep, like silly putty.
At the other end of the spectrum are pure metals like iron. There, find the most ductile/malleable metal. Lead is not a bad choice. Gold is better. Indium might work, given its low melting point and possible near-room temperature annealing.
RE: Novel material search. High fatigue resistance, deformable
Creep and cold flow are not too much of a concern
The material does need to exhibit resistance to being deformed.
Angle of deformation should be 90 degrees, but the bend radius can be 3-5 inches