Effects of cobalt content on the microstructures of Fe–9Al–30Mn–1C–xCo alloys

Influence of titanium addition on the microstructure of the novel ferrous-based stainless steel

“…5(d) is a zone axis [0 1 1] BF image taken from the ␥/␣ boundary of as-quenched alloy aged at 450 • C for 24 h, revealing that in addition to the reflection spots of the ␣ phase (indicated by the arrows) and ␥ phase, the SAEDP also comprises small superlattice spots. From the camera length and d-spacings of the spots, the particle is identified as -phase carbide ((Fe,Mn) 3 AlC x ) having an order L 1 2 structure [9,15] with a lattice parameter a of 0.385 nm. Fig.…”

“…Moreover, other metallic elements such as Si, Cu, Ti, V, Co, and Cr may be added in order to increase the corrosion and oxidation resistance as well as improve strength [5,[11][12][13][14][15][16]. Our previous studies showed that some carbides were formed on Fe-Al-Mn and Fe-Al-Mn-C-based alloys following phase transformation by heat-treatment and surface functionalization [16,17].…”

Biocompatibility of metal carbides on Fe–Al–Mn-based alloys

“…Further, the intensities of the (1 0 0) and (1 1 0) spots of the L1 2 structure are similar. Therefore, it was concluded that these superlattice spots correspond to -carbides ((Fe,Mn) 3 AlC x ) having an ordered L 1 2 structure with lattice constant a = 0.368 nm [3,5,23] and that fine -carbides were formed in the matrix by spinodal decomposition during quenching [3,5]. Fig.…”

“…Metallic biomaterials such as cobalt-based alloys, ferrous-based alloys and titanium-based alloys exhibit superior characteristics for biomedical applications due to their high specific strength, and biocompatibility [1][2][3][4][5][6][7][8][9][10]. All of them are used as metallic structural biomaterials such as artificial hip joints and dental implants for application in replacement of hard tissue.…”

“…The nano-(␥ phase + carbide) particles have important roles in the formation of a nanostructured oxide layer that can increase alloy biocompatibility. Moreover, numerous researchers have also demonstrated that Fe-Al-Mn-based alloys were subjected to heat treatment at various temperature ranging; the nano-precipitates were formed in the matrix of the alloys [3,5,7,8]. It is believed that both nanostructural surfaces and nano-precipitates can promote the contact area of the albumin, and then increasing the hemcompatibility and biocompatibility.…”