Effect of pulse current on the microstructure of tungsten electrode in tensile process - 文章详情页

作者：

Cao, Jie (Cao, Jie.) | Yang, Jian Can (Yang, Jian Can.) | Zhu, Wen Guang (Zhu, Wen Guang.)

收录：

EI Scopus

摘要：

The　forming　of　rare　earth　tungsten　electrode　is　difficult.　The　mechanical　properties　and　microstructure　evolution　of　several　φ2.4mm　rare　earth　tungsten　electrodes　were　studied　by　SEM,　EBSD　and　TEM　technology.　The　static　tensile　test　was　carried　out　in　different　pulse　current　density,　and　the　temperature　of　the　samples　in　processing　was　measured　with　K　thermocouple.　The　results　showed　that　the　sample　had　the　best　elongation　of　8.87%　when　the　pulse　current　density　was　800　A/mm2.　SEM　analysis　showed　that　the　second　phase　was　broken　and　some　of　them　were　spheroidized　in　electric　sample.　It　is　indicated　that　the　electric　pulse　accelerated　the　formation　of　[110]　texture　and　the　low　angle　boundaries　decreased　by　EBSD,　and　TEM　analysis　revealed　that　the　dislocation　cell　wall　was　thinner　and　the　adjacent　cell　got　merged　in　electric　sample.　©　(2015)　Trans　Tech　Publications,　Switzerland.

关键词：

Biomechanics Electric variables measurement Electrodes Elongation Rare earths Semiconductor insulator boundaries Tensile testing Textures Thermocouples Tungsten

作者机构：

[ 1 ] [Cao, Jie]School of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Yang, Jian Can]School of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Zhu, Wen Guang]School of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China

通讯作者信息：

[yang, jian can]school of materials science and engineering, beijing university of technology, beijing; 100124, china

电子邮件地址：

jcan@bjut.edu.cn

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