کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577546 1514809 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of microstructure on the tensile property of porous Ti produced by powder metallurgy technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of microstructure on the tensile property of porous Ti produced by powder metallurgy technique
چکیده انگلیسی

Porous Ti with the porosity of 50% and the average pore size of 200 μm was prepared by powder metallurgy technique using polymethyl methacrylate (PMMA) as space holder. The microstructure, tensile deformation and final fracture behavior were investigated. Porous Ti reveals two kinds of pores: open interpenetrated macro-pores in the range of 30–260 μm and micro-pores with the average size of 9 ± 2 μm. The stepped surface of macro-pores consists of polygons with angles of 30°, 60° or 90°. The ultimate tensile strength of porous Ti is 81 MPa. Porous Ti fails with the formation of shear bands at 45° to the tensile axis. The cracking of the struts on porous Ti is controlled primarily by the macro-pores. Fractography shows evidence of the brittle cleavage fracture in porous Ti. The failure mechanism has been discussed by taking the intrinsic microstructural features into consideration.


► Porous Ti with two kinds of pores and stepped walls fails with brittle cleavage.
► Ultimate tensile strength of porous Ti is 81 MPa.
► Cracking of the struts on porous Ti is controlled primarily by macro-pores.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 534, 1 February 2012, Pages 43–52
نویسندگان
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