Microindentation study of Ti–6Al–4V alloy

Nonlocal Crystal Plasticity Finite Element Simulations of Nanoindentation on Ti‐6Al‐4V Alloy

“…As the pileup patterns show strong orientation dependence, and there will be a certain pileup pattern for a specific orientation, the indentation test could even be used as a fast method for determination of crystal orientations. The maximum strain appears on slip system (0001) [11][12][13][14][15][16][17][18][19][20] is the largest of the 12 slip systems, which is 1.91. The maximum strain on the slip system (0-111) [-2110] is the minimum of the 12 slip systems, which is 0.23.…”

“…As a common + titanium alloy , Ti-6Al-4V has been one of the most important and widely used titanium alloys in aerospace industries, due to its low density and attractive mechanical and corrosion resistant properties [13][14][15]. Some researchers have investigated micromechanical behavior of Ti-6Al-4V alloy by nanoindentation [3,16] and microindentation [17][18][19] experiments. Han et al [16] also studied the nanoindentation process of this alloy by CPFE simulations using a local constitutive law.…”

“…GND density distributions on 12 slip systems after nanoindentation for orientation 1 (a) (0001)[11][12][13][14][15][16][17][18][19][20] (b) (0001)[1-210] (c) (0001)[-2110] (d) (1-100)[11][12][13][14][15][16][17][18][19][20] (e) (10-10)[1-210] (f) (01-10)[-2110] (g) (1-101)[11-20 (h) (10-10)[1-210] (i) (01-11)[-2110] (j) (-1101)[11-20] (k) (-1011)[1-210] (l) (0-111)[-2110] Fig. 8 Cross sectional views of GND density distributions on 12 slip systems after nanoindentation for orientation 1 (a) (0001)[11-20] (b) (0001)[1-210] (c) (0001)[-2110] (d) (1-100)[11-20] (e) (10-10)[1-210] (f) (01-10)[-2110] (g) (1-101)[11-20 (h) (10-10)[1-210] (i) (01-11)[-2110] (j) (-1101)[11-20] (k) (-1011)[1-210] (l) (0-111)[-2110] Conclusions…”

Investigations of inhomogeneous mechanical properties and plastic deformations in HIPed P/M nickel-base superalloy FGH96 by using micro-indentation methods

“…For a Berkovich indenter, the value of x is 0.75 [25]. Hence, the micro-hardness (H) of the alloy can be expressed as According to this equation, the micro-hardness is typically evaluated atP max .…”

Micro-indentation hardness model of AISI1045 steel during micro-plasticity indentation experiment considering size effect

“…Material physical parameters can be calculated through various simulation methods to provide support for performance calculation [2][3][4][5]. Until now, there are many reports on micro-indentation [6][7][8], however, these researches are almost about the experimental analysis and its numerical calculation has not studies yet. Commonly, size effect in classical plasticity theory is not considered [9][10] and practical micro-indentation may led to significant size effect with linear decrease of micro-scale deformation [11][12], the intrinsic material length has to be considered to obtain the accurate micro-indentation hardness considering size effects.…”