TY - GEN
T1 - Effect of surface roughness on determination of creep parameters using impression creep technique
AU - Yan, Wuzhu
AU - Zhao, B.
AU - Yue, Zhufeng
PY - 2010
Y1 - 2010
N2 - The indentation creep test, especially the impression creep, exhibits a magic appealing in the determination of creep properties of small structures in industry for its simplicity, efficiency and non-destruction merits. Most of previous researches of indentation or impression creep neglect the effect of surface roughness of materials, which plays a crucial role in extracting creep properties of materials. The FE results showed that the surface roughness has no effect on the determination of creep exponent when the punching stress is larger than 150MPa. However, under a smaller punching stress the stress exponent is decreased due to the "Tuner" effect of asperities. The conclusions drawn in the present study provide an important guidance on experiment results amendment for impression creep technique.
AB - The indentation creep test, especially the impression creep, exhibits a magic appealing in the determination of creep properties of small structures in industry for its simplicity, efficiency and non-destruction merits. Most of previous researches of indentation or impression creep neglect the effect of surface roughness of materials, which plays a crucial role in extracting creep properties of materials. The FE results showed that the surface roughness has no effect on the determination of creep exponent when the punching stress is larger than 150MPa. However, under a smaller punching stress the stress exponent is decreased due to the "Tuner" effect of asperities. The conclusions drawn in the present study provide an important guidance on experiment results amendment for impression creep technique.
UR - http://www.scopus.com/inward/record.url?scp=78649235706&partnerID=8YFLogxK
M3 - 会议稿件
AN - SCOPUS:78649235706
SN - 9781605111971
T3 - Materials Research Society Symposium Proceedings
SP - 215
EP - 220
BT - Mechanical Behavior at Small Scales - Experiments and Modeling
T2 - 2009 MRS Fall Meeting
Y2 - 29 November 2009 through 3 December 2009
ER -