The cast pipe joint of the Fe-15Mn-5Si-8Cr-5Ni-0.25C alloy was manufactured (the numbers in the composition denote the weight percentage of the elements while the weight percentage of Fe is the balance). The corresponding microstructure and shape memory effect are compared with those of a forged alloy. The results show that the cast joint has a good shape memory effect and may be industrially applied while the cast joint keeps jointing under a tensile force of 20 kN and a sealing pressure of 5 MPa. Moreover, it is found that the addition of nitrogen in the alloy doesn’t evidently improve the shape memory effect of the alloy.

The dry wear behavior of Al90Mn8Ce2 alloy hot pressed has been studied. It shows that Al90Mn8Ce2 alloy possessed excellent wear resistance. The wear resistance of the alloy pressed at 773 K is three times as high as that of the A355 aluminum alloy. The fine high hardness intermetallic compound and alumina particles contributed to the wear resistance of the alloy.

The corrosion resistance of Ni200, EB26 1, SHOMAC, MON EL400, 15 5PH, 3RE60, 304L and 316L alloys in chlorine and al kali industrial environment is determined by weight loss measure ments, microscopy and energy dispersive spectrometer. It is shown that welding does not deteriorate the corrosion resistance of the al loys except SHOMAC. Pitting corrosion and intergranular corrosion are present and the corrosion rates are a function of tempera ture and existence of CI and absorption of tramp elements on grain boundaries. According to the experiments, optimal selection of alloys for elevators working at different temperatures is suggested. Der Korrosionswiderstand yon Ni200, EB26 1, SHOMAC, MO NEL400, 15 5PH, 3RE60, 304L trod 316L Legierungen in indu strieller Chlor und Alkaliarngebung wurde mittels Gewichtsver lustmessungen, Gefftgeaufnahmen sowie energiedispersivem Spek trometer bestimmt. Es konnte gezeigt werden, dass das Schweigen den Korrosionswiderstand der Legiernngen, mit Ausnahme der Legiernng SHOMAC, nicht verschlechtert. Lochkorrosion trod inter kristalline Korrosion treten atff und die Korrosionsgeschwindigkei ten sind eine Ftmktion der Temperatur, der Anwesenheit yon Chlo ridionen und der Absorption yon Begleitelementen auf den Korn grenzen. Entsprechend den Ergebnissen der Versuche wird eine op timale Auswahl der Legiertmgen ffLr die bei verchiedenen Tempe rataren arbeitenden FOrdereinrichtungen vorgeschlagen.

Through extending a model for size-dependent glass transition temperature (Tg), the size-dependent Curie temperature of low-dimensional ferromagnetic metals (particles, wires and thin films) with different morphologies in full size range (Tc) is modeled. Based on energetic and thermodynamic approaches, the critical size and morphology of the metals are considered. It is found that Tc drops as size decreases, which corresponds to the experimental results of Ni particles and wires, as well as Fe, Co and Ni thin films.

A simple formula without any free parameter is established to estimate surface energies of elemental metals of low-index surfaces, which is developed by modifying the classic broken-bond rule. The predicted results of the formula for 52 A1-A4 and sc elemental crystals are in agreement with experimental results and the first-principles calculations although deviations are present for several divalent sp metals.