Molecular dynamics simulations of nanoindentation and scratch in Cu grain boundaries

• Shih-Wei Liang,
• Ren-Zheng Qiu and
• Te-Hua Fang

Beilstein J. Nanotechnol. 2017, 8, 2283–2295, doi:10.3762/bjnano.8.228

• nanoindentation results (i.e., indentation on the upper area) of the vertical grain boundary showed that the force was translated along the grain boundary, thereby producing intergranular fractures. Keywords: indentation; molecular dynamics; nanograin boundary; nanoscratch; Introduction The recent developments

• in nanotechnology have allowed the related research techniques to be applied to diverse fields including physics, energy, medicine, and industrial engineering, among others [1][2]. In this sense, nanoindentation [3][4][5][6][7][8][9][10][11][12] and nanoscratch [13][14][15][16][17][18][19][20][21

• and adhesion when a probe touches the substrate) between Ni (probe) and Au (thin film substrate) under nanoindentation conditions using MD simulations. Moreover, Mulliah et al. [18] analyzed the friction coefficient, the dislocation, and related parameters of the nanostructure under nanoscratch

Nanotribological behavior of deep cryogenically treated martensitic stainless steel

• Germán Prieto,
• Konstantinos D. Bakoglidis,
• Walter R. Tuckart and
• Esteban Broitman

Beilstein J. Nanotechnol. 2017, 8, 1760–1768, doi:10.3762/bjnano.8.177

• nitrogen for 2 h and annealed. The elastic–plastic parameters of the materials were assessed by nanoindentation tests under displacement control, while the friction behavior and wear rate were evaluated by a nanoscratch testing methodology that it is used for the first time in steels. It was found that

• cryogenic treatments increased both hardness and elastic limit of a low-carbon martensitic stainless steel, while its tribological performance was enhanced marginally. Keywords: carbide refinement; cryogenic treatments; friction; nanoindentation; nanoscratch; wear-resistance improvement; Introduction AISI

• ] and an increase in fracture toughness (ca. 30%) was reported in deep cryogenically treated specimens [12]. Nanotribological tests, such as the nanoscratch technique described in [13], can be used for studying the influence of microstructural features on the frictional and wear behavior of a material

Nanotribology at high temperatures

• Saurav Goel,
• Alexander Stukowski,
• Gaurav Goel,
• Xichun Luo and
• Robert L. Reuben

Beilstein J. Nanotechnol. 2012, 3, 586–588, doi:10.3762/bjnano.3.68

• , Germany, has reversed the roles of the conventionally used cutting tool and the workpiece material and has succeeded in machining a diamond substrate using a steel rod as a tip [9]. This raises a key question concerning the stability of diamond tips during nanoscratch tests at elevated temperatures and