添加微量ZrC对钨材料组织演变和性能的影响（英文）
|
摘要
为了批量化制备面向等离子体用高性能钨材料,在钨中添加少量ZrC第二相粒子提高钨的性能,系统的研究了W-ZrC材料在1150~2000℃常压氢气气氛烧结下的致密化行为、晶粒和第二相颗粒的长大行为,并在优化工艺下研究了ZrC含量对材料性能和组织的影响。结果表明,W-ZrC复合粉末在1300℃开始形成非常细小钨晶粒,晶粒在1600℃之前增长速率很大,在1600℃之后速率变缓。在优化的烧结工艺下,W-ZrC材料的相对密度和抗拉伸强度最高分别可达到99.6%和460 MPa。ZrC以为0.1~2μm粒子均匀分散在W基体的晶界和晶粒内部。ZrC可以有效地阻碍W晶界的迁移,有效的将钨的晶粒由100μm细化至30μm左右。ZrC改变了钨材料的断裂模式,并提高其强度和韧性。
In order to prepare high performance tungsten used as plasma face material, a trace amount of ZrC was added into tungsten, and the densification behavior, properties and microstructure evolution of W-ZrC composites sintered at temperatures in the range of 1150~2000 ℃ in flowing hydrogen atmosphere were investigated. Results show that W-ZrC composite powders begin to form fine tungsten grains at 1300 ℃. The growth rate of grains is high below 1600 ℃, and then slows down. The maximum relative density and tensile strength are 99.6% and 460 MPa under the optimum sintering process, respectively. ZrC particles are uniformly dispersed at grain boundaries and in grains interior with particle size from 0.1 μm to 2 μm. Minor ZrC can effectively prevent the migration of grain boundaries and refine grain sizes from 100 μm of pure tungsten to 30 μm of W-ZrC composites. Minor ZrC can change the fracture mode and improve the strength and toughness of tungsten.
In order to prepare high performance tungsten used as plasma face material, a trace amount of ZrC was added into tungsten, and the densification behavior, properties and microstructure evolution of W-ZrC composites sintered at temperatures in the range of 1150~2000 ℃ in flowing hydrogen atmosphere were investigated. Results show that W-ZrC composite powders begin to form fine tungsten grains at 1300 ℃. The growth rate of grains is high below 1600 ℃, and then slows down. The maximum relative density and tensile strength are 99.6% and 460 MPa under the optimum sintering process, respectively. ZrC particles are uniformly dispersed at grain boundaries and in grains interior with particle size from 0.1 μm to 2 μm. Minor ZrC can effectively prevent the migration of grain boundaries and refine grain sizes from 100 μm of pure tungsten to 30 μm of W-ZrC composites. Minor ZrC can change the fracture mode and improve the strength and toughness of tungsten.
引文
1 Piazza G,Mattews G F,Pamela J et al.Journal of Nuclear Materials[J],2007,367-370:1438
2 Han Yong,Fan Jinglian,Liu Tao et al.Int Journal of Refractory Metals and Hard Materials[J],2011,29:743
3 Han Yong,Fan Jinglian,Liu Tao et al.Rare Metal Materials and Engineering[J],2012,41(7):1273(in Chinese)
4 Roedig M,Kuehnlein W,Linke J et al.Fusion Engineering and Design[J],2002,61-62:135
5 Brezinsek S,Fundamenski W,Eich T et al.Journal of Nuclear Materials[J],2011,415:S936
6 Visca E,Escourbiac F,Libera S et al.Fusion Engineering and Design[J],2009,84:309
7 Rieth M,Dudarev S L,Vicente S M et al.Journal of Nuclear Materials[J],2013,432:482
8 Gavila P,Riccardi B,Constans S et al.Fusion Engineering and Design[J],2011,86:1652
9 Kurishita H,Amano Y,Kobayashi S et al.Journal of Nuclear Materials[J],2007,367-370:1453
10 Zhang Shun,Fan Jinglian,Cheng Huichao et al.Rare Metal Materials and Engineering[J],2013,42(7):1429(in Chinese)
11 Roosta M,Baharvandi H.Int Journal of Refractory Metals and Hard Materials[J],2013,37:29
12 Roosta M,Baharvandi H.Int Journal of Refractory Metals and Hard Materials[J],2010,28:587
13 Kim J H,Park C,Lim J et al.Int Journal of Refractory Metals and Hard Materials[J],2012,35:49
14 Kim J H,Park C,Lim J et al.Journal of Alloys and Compounds[J],2015,623:282
15 Kim J H,Seo M,Kang S et al.Int Journal of Refractory Metals and Hard Materials[J],2010,527:4021
16 Song G M,Wang Y J,Zhou Y et al.Materials Science and Engineering A[J],2002,334:223
17 Zhang T Q,Wang Y J,Zhou Y et al.Materials Science and Engineering A[J],2009,512:19
18 Zhang T Q,Wang Y J,Zhou Y et al.Materials Science and Engineering A[J],2010,527:4021
19 Fan Jinglian,Han Yong,Li Pengfei et al.Journal of Nuclear Materials[J],2014,455:717
20 Lai Heyi.The Processing Rare Metal Alloy[J],1978(2):1(in Chinese)
21 Sciti D,Guicciardi S,Nygren M et al.Scripta Mater[J],2008,59:63
2 Han Yong,Fan Jinglian,Liu Tao et al.Int Journal of Refractory Metals and Hard Materials[J],2011,29:743
3 Han Yong,Fan Jinglian,Liu Tao et al.Rare Metal Materials and Engineering[J],2012,41(7):1273(in Chinese)
4 Roedig M,Kuehnlein W,Linke J et al.Fusion Engineering and Design[J],2002,61-62:135
5 Brezinsek S,Fundamenski W,Eich T et al.Journal of Nuclear Materials[J],2011,415:S936
6 Visca E,Escourbiac F,Libera S et al.Fusion Engineering and Design[J],2009,84:309
7 Rieth M,Dudarev S L,Vicente S M et al.Journal of Nuclear Materials[J],2013,432:482
8 Gavila P,Riccardi B,Constans S et al.Fusion Engineering and Design[J],2011,86:1652
9 Kurishita H,Amano Y,Kobayashi S et al.Journal of Nuclear Materials[J],2007,367-370:1453
10 Zhang Shun,Fan Jinglian,Cheng Huichao et al.Rare Metal Materials and Engineering[J],2013,42(7):1429(in Chinese)
11 Roosta M,Baharvandi H.Int Journal of Refractory Metals and Hard Materials[J],2013,37:29
12 Roosta M,Baharvandi H.Int Journal of Refractory Metals and Hard Materials[J],2010,28:587
13 Kim J H,Park C,Lim J et al.Int Journal of Refractory Metals and Hard Materials[J],2012,35:49
14 Kim J H,Park C,Lim J et al.Journal of Alloys and Compounds[J],2015,623:282
15 Kim J H,Seo M,Kang S et al.Int Journal of Refractory Metals and Hard Materials[J],2010,527:4021
16 Song G M,Wang Y J,Zhou Y et al.Materials Science and Engineering A[J],2002,334:223
17 Zhang T Q,Wang Y J,Zhou Y et al.Materials Science and Engineering A[J],2009,512:19
18 Zhang T Q,Wang Y J,Zhou Y et al.Materials Science and Engineering A[J],2010,527:4021
19 Fan Jinglian,Han Yong,Li Pengfei et al.Journal of Nuclear Materials[J],2014,455:717
20 Lai Heyi.The Processing Rare Metal Alloy[J],1978(2):1(in Chinese)
21 Sciti D,Guicciardi S,Nygren M et al.Scripta Mater[J],2008,59:63