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Microstructure and Mechanical Properties of Nano-Size Zirconium Carbide Dispersion Strengthened Tungsten Alloys Fabricated by Spark Plasma Sintering Method
| Content Provider | Semantic Scholar |
|---|---|
| Author | Xie, Zongliang Fang, Qianfeng Zhang, Tao Jiang, Yan Wang, Xianping Liu, Changsong |
| Copyright Year | 2015 |
| Abstract | W-(0.2, 0.5, 1.0)wt% ZrC alloys with a relative density above 97.5% were fabricated through the spark plasma sintering (SPS) method. The grain size of W-1.0wt% ZrC is about 2.7 μm, smaller than that of pure W and W-(0.2, 0.5)wt% ZrC. The results indicated that the W-ZrC alloys exhibit higher hardness at room temperature, higher tensile strength at high temperature, and a lower ductile to brittle transition temperature (DBTT) than pure W. The tensile strength and total elongation of W-0.5wt% ZrC alloy at 700 °C is 535 MPa and 24.8%, which are respectively 59% and 114% higher than those of pure W (337 MPa, 11.6%). The DBTT of W-(0.2, 0.5, 1.0)wt% ZrC materials is in the range of 500°C–600°C, which is about 100 °C lower than that of pure W. Based on microstructure analysis, the improved mechanical properties of the W-ZrC alloys were suggested to originate from the enhanced grain boundary cohesion by ZrC capturing the impurity oxygen in tungsten and nano-size ZrC dispersion strengthening. |
| Starting Page | 1066 |
| Ending Page | 1071 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1088/1009-0630/17/12/15 |
| Volume Number | 17 |
| Alternate Webpage(s) | http://pst.hfcas.ac.cn/fileup/PDF/14-293.pdf |
| Alternate Webpage(s) | https://doi.org/10.1088/1009-0630%2F17%2F12%2F15 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
