کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11015774 | 1781703 | 2019 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties of W-ZrO2 alloys by different preparation techniques
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The W-1.5â¯wt%ZrO2 alloys were prepared through azeotropic distillation method and then fabricated by four different processing techniques. The effect mechanisms of original solutions containing different acidity on the physical characteristics of the doped tungsten powders were analyzed. The doped tungsten powders with lower degree of particle agglomerates can be prepared under the condition of the original solution with the pH value of 2. Hot isostatic pressing process is beneficial to obtain higher microhardness and excellent wear resistance compared to conventional sintering, vertical sintering and hot swaging process. Meanwhile, the vertical sintering process can fabricate alloy with the compressive strength of 2090â¯MPa and the critical fracture strain of 0.35, approximately 24.4% and 45.8% higher than those of the swaged W-ZrO2 alloy, and approximately 55.3% and 98.1% higher than those of the swaged pure W, respectively. After swaging, though the swaged alloy has the highest density, the compressive strength and critical failure strain both decrease due to the growth of grain after annealing. The strengthening mechanisms of W-1.5%ZrO2 alloys prepared by different techniques were discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 210-221
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 210-221
نویسندگان
Fangnao Xiao, Qiang Miao, Shizhong Wei, Zhou Li, Tielong Sun, Liujie Xu,