کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
830729 1470360 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase, microstructure and properties evolution of fine-grained W–Mo–Ni–Fe alloy during spark plasma sintering
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Phase, microstructure and properties evolution of fine-grained W–Mo–Ni–Fe alloy during spark plasma sintering
چکیده انگلیسی

Fine-grained tungsten (W) heavy alloy containing molybdenum (Mo) with W particle sizes of less than 5 μm were fabricated by spark plasma sintering (SPS) pre-milling W–2Mo–7Ni–3Fe powder at a lower temperature of 1000–1250 °C. Phase, microstructure and mechanical properties evolution of W–Mo–Ni–Fe alloy during spark plasma sintering were studied in detail. As increasing sintering temperature, the hardness of the alloy decreased rapidly. However, bending strength of the alloy demonstrated a fall–rise–fall trend, and the maximum strength was obtained at 1150 °C. The W–2Mo–7Ni–3Fe alloy microstructure was composed of white W-grain, gray W-rich structure, black γ-(Ni, Fe, W, Mo) binding phase, and deep-gray W-rich structure. The intergranular fracture along the W/W grain boundary is the main fracture modes of W–2Mo–7Ni–3Fe alloy.


► Fine-grained W–Mo–Ni–Fe alloy was fabricated by HEBM assisted SPS technology.
► The HEBM-SPS technology degraded the sintering temperature of W–Mo–Ni–Fe alloy.
► The microstructure of W–Mo–Ni–Fe alloy consists of four different phases.
► The intergranular fracture is dominant for most fine-grained W–Mo–Ni–Fe alloy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 37, May 2012, Pages 8–12
نویسندگان
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