The Structural Properties of Fe-Ti-B Based Alloys Produced by Mechanical Alloying

Abstract

In the present study, the production of Fe-Ti-B based alloys was realized and their structure and properties were investigated. Mechanical alloying proceeds by the continual cold welding and fracturing of the constituent mixture of Ti+4B+5Fe powder when subjected to the large compressive forces of a high speed mill. The powder charge together with 7 mm diameter steel balls were loaded into a tool steel grinding container at approximately 350 RPM for 20 h. The samples were shaped as cylinder of Ø15×8 mm dimensions by uniaxial pressing at 450 MPa. Then, the green body materials were produced by sintering at 1100• C for 14 h in argon atmosphere. The morphology of composite materials was investigated by optical microscopy and scanning electron microscopy and phase analysis was realized by x-ray diraction analysis. The bulk densities of the materials were measured using by Archimedes method. Also, the micro-hardness of the samples was measured by Vickers indentation technique. As a result, Fe, iron boride (FeB, Fe2B) and titanium boride (TiB2) phases were detected in the phase analysis of the Fe-Ti-B based materials. The hardness of the materials was measured between 1107 HV0.05 and 1551 HV0.05, depending on sintering time. The densities of the samples were determined between 4.205 g/cm 3 and 4.219 g/cm 3 .

Modification of the Al-9%SiMg Alloy with Aluminum, Boron, and Titanium Fast Cooled Mixtures

“…The interactions between "opposing" chemical elements used as * corresponding author; e-mail: tomekl@uwm.edu.pl modifying agents may have an adverse effect on successive alloy modifications. An example may be the interactions between Sb and Sr, and between Sb and Na, which are a serious concern during further processing of modified alloys [1,[12][13][14][15][16].…”

Effect of Ti, Al, Si on the Structure and Mechanical Properties of Boron-Rich Fe–B–C Alloys

“…The elements, commonly used for alloying, include titanium, aluminum, silicon etc. [19][20][21][22][23]. But influence of their additions is mainly studied on the Fe-B-C alloys containing up to 3 wt.…”