Nanomechanical characterization of nanostructured bainitic steel: Peak Force Microscopy and Nanoindentation with AFM

被引:50
作者
Morales-Rivas, Lucia [1 ]
Gonzalez-Orive, Alejandro [2 ]
Garcia-Mateo, Carlos [1 ]
Hernandez-Creus, Alberto [2 ]
Caballero, Francisca G. [1 ]
Vazquez, Luis [3 ]
机构
[1] Natl Ctr Met Res CENIM CSIC, Dept Phys Met, Madrid 28040, Spain
[2] Univ La Laguna, Fac Quim, Dept Quim Fis, E-38206 Tenerife, Spain
[3] ICMM CSIC, Madrid 28049, Spain
来源
SCIENTIFIC REPORTS | 2015年 / 5卷
关键词
ELASTIC-MODULUS; MECHANICAL STABILITY; PILE-UP; TRANSFORMATION; INDENTATION; LOAD; DEFORMATION; DEPENDENCE; BEHAVIOR; HARDNESS;
D O I
10.1038/srep17164
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The full understanding of the deformation mechanisms in nanostructured bainite requires the local characterization of its mechanical properties, which are expected to change from one phase, bainitic ferrite, to another, austenite. This study becomes a challenging process due to the bainitic nanostructured nature and high Young's modulus. In this work, we have carried out such study by means of the combination of AFM-based techniques, such as nanoindentation and Peak Force Quantitative Nanomechanical Mapping (PF-QNM) measurements. We have addressed critically the limits and advantages of these techniques and been able to measure some elastoplastic parameters of both phases. Specifically, we have analyzed by PF-QNM two nanostructured bainitic steels, with a finer and a coarser structure, and found that both phases have a similar Young's modulus.
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页数:16
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