The fracture behavior of Ti17 billet processed by the β forging was examined. results demonstrate that specimen orientation has a pronounce effect on toughness value as well crack propagation path. anisotropy can be attributed to elongated and aligned grain. preferentially nucleates propagates along precipitate-free zone nearby grain boundary. It causes either deflection or delamination, enhanc...

The seed filling of a seed-metering device is critical process in sugarcane cultivation operations. To analyze the contact between billets, related mechanical components, and law billets movement device, simulation seed-filling based on EDEM was proposed, geometric model particle model, were established by software. physical experimental results angle repose compared. showed that relative error...

A laboratory bioassay was investigated for screening insecticides for preventing stand losses by the wireworm Melanotus communis (Gyllenhal) to germinating plant cane. For liquid materials, single-eye billets were dipped into different concentrations of a candidate insecticide and then planted in plastic containers of organic soil; wireworms were then introduced, airtight lids were placed onto ...

Recently, the complex shearing of extruded tube (CSET) technique was proposed representing a new way processing tubes from bulk billet as combination extrusion with two passes equal channel angular and possible mandrel rotation. In present paper, influence rotation on final microstructure mechanical properties fabricated 3003 aluminium alloy investigated. Electron back scatter diffraction (EBSD...

Two high-strength low-alloyed steels alloyed with various Nb contents were prepared using continuous casting (CC) technology. In the round Steel 30Nb CC billet, it was segregation of C and in central equiaxed zone that promoted precipitation primary NbC carbides at grain boundaries. After processing into seamless tubes, micron-sized located middle bands, surrounded by many nano-sized formed dur...

A new 2D-hybrid model in cylindrical coordinates intended for the study of a transient magneto-thermal coupled problem is proposed. This used to evaluate spatiotemporal distribution temperature rotating aluminum billets heated by permanent magnets induction-heating device (PMIHD). The proposed hybrid consists coupling an exact analytical solution 2D magneto-harmonic field thermal analysis where...

In the metal forming process, a realistic frictional coefficient must be specified at the die/work piece interface. Several methods are developed to evaluate friction coefficient in large deformation processes. This paper presents the concept of friction calibration map to determine different frictional conditions between interfaces of die and billet in the upsetting process. One such map is ge...

Si3N4/BN fibrous monoliths were prepared with 4 wt% Y2O3 added as a sintering aid to the Si3N4. Residual carbon, present in the billet before hot-pressing, was shown to influence the final microstructure. The sintering aid glass, known to migrate into the BN cell boundaries during hotpressing, was not sufficient in quantity to prevent premature shear failure when samples were tested in flexure....