کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9639776 | 1430417 | 2005 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic mechanical and fracture properties of an infiltrated TiC-1080 steel cermet
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dynamic mechanical and fracture properties of an infiltrated TiC-1080 steel cermet Dynamic mechanical and fracture properties of an infiltrated TiC-1080 steel cermet](/preview/png/9639776.png)
چکیده انگلیسی
The dynamic mechanical and fracture properties of a TiC porous network infiltrated with1080 steel are reported. Following infiltration, the cermet is subjected to various heat treatments that affect essentially the steel matrix. Dynamic compression tests show that the heat treatments increase the fracture strength of the cermet. The quasi-static fracture toughness (KIc) is also increased by the heat treatments. The dynamic (initiation) fracture toughness (KId) is substantially higher (by about a factor of 3) than its static counterpart. Failure mechanisms consist mainly of cleavage of the TiC and matrix grains, along with minor interfacial decohesion. However, dynamic loading induces substantial damage around the crack tip, consisting essentially of cleavage of TiC grains. Microcrak toughnening is believed to be responsible for the high dynamic toughness of the material. The critical microstructural fracture event is thus identified as the spreading of TiC cleavage microcracks into the neighboring steel grains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 42, Issue 2, January 2005, Pages 697-715
Journal: International Journal of Solids and Structures - Volume 42, Issue 2, January 2005, Pages 697-715
نویسندگان
D. Rittel, N. Frage, M.P. Dariel,