Effect of surface nanocrystallization on the corrosion behavior of Ti–6Al–4V titanium alloy

Enhanced fatigue behavior of powder metallurgy Ti–6Al–4V alloy by applying ultrasonic impact treatment

“…However, it is rather complicated and costly technology [10,11], and it not always leads to a complete elimination of pores, particularly where titanium powders with high chloride content are concerned [4]. On the other hand, a number of the surface hardening methods, such as shot peening (SP) [12][13][14], surface mechanical attrition treatment (SMAT) [15,16], deep rolling (DR) [17], laser shot peening (LSP) [17] or ultrasonic impact treatment (UIT) [18][19][20], can provide severe plastic deformation of the surface layer of the treated alloy, which results both in significant grain refinement and in the enhancement of fatigue properties. Moreover, the SP process applied to Al alloy [21] or PM Ti-6Al-4V alloy [22,23] was shown to induce the elimination of surface pores.…”

Effect of surface mechanical attrition treatment on corrosion resistance of commercial pure titanium

“…Ti-6Al-4V [12] and Ti45Zr38Al17 [35] . The semicircular diameter of the SMAT30 sample is much larger than the untreated sample, and demonstrates a nobler electrochemical behavior.…”

“…The formation of a stable passive oxide film on titanium and its alloys may reduce their corrosion [10,11] . A high-surface grain boundary density is beneficial for the formation of a passive film [12] .…”

“…Many efforts have focused on surface hardening to improve corrosion resistance. Grain refining has been shown to be an effective method to improve surface properties [12][13][14][15] .…”

Influence of Ultrafine‐Grained Layer on Gaseous Nitriding of Large‐Sized Titanium Plate

“…[1][2][3][4] However, the low hardness values and poor wear resistance have seriously restricted its applications in some engineering fields. [5,6] It is well known that wear fatigue originates from the titanium surface, but the service life of the titanium plate can be improved by hardening the surface. [7,8] Nitriding is one of the most effective methods for improving surface hardness values and wear resistance for metal-based materials, [9][10][11] and these properties along with corrosion resistance can be significantly enhanced via nitriding treatments on titanium plates.…”