Precipitates will dissolve under compress loading?

I do phase field simulation of multiparticle precipitates rafting under a uniaxial a stress and find that precipitates will dissolve under compress stress, but will show rafting behavior under tensile stress. This is interesting. I don't know this is possible in reality or just a mistake of my code. Some one can give me some hints? I should discuss this with others and do a literature search. If this phenomena is true, I could test the critical grain size and critical stress with my code maybe.