Analysis of Microstructure and Properties of Refractory Metal Molybdenum Prepared by High-pressure Torsion AITranslate
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Using the refractory powders of pure molybdenum as raw material, the molybdenum billet with relative density of 96.45% was prepared by high-pressure torsion at 350 ℃ temperature and 1.5 GPa pressure. The rules of pore evolution and densification strengthening were analyzed with various detection methods in the process of high-pressure torsion. The effect was studied of height to diameter ratio of prepressed molybdenum billets on the microstructure and properties of high-pressure torsion molybdenum billets. The results show that the smaller the height to diameter ratio, the greater the material equivalent shear strain,and the higher the relative density and hardness value of high-pressure torsion molybdenum billets. Furthermore,its internal sub-grain size refinement and microscopic strain accumulation are more obvious. When the height to diameter ratio is reduced from 0.5 to 0.3, the dislocation density caused by grain refinement and strain accumulation increases from 1.67 ×10^14 m 2 to 3.03×10^14 m-2.
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1ZHILYAEV A P, LANGDON T G. Using high-pres- sure torsion for metal processing: Fundamentals and ap- plications [J]. Progress in Materials Science, 2008, 53 (6) :893-979.
2李晓,李萍,薛克敏,王成.高压扭转压力对SiC_p-Al复合材料组织性能的影响[J].中国有色金属学报,2012,22(2):401-407. 被引量：12
3上官丰收,谢季佳,洪友士.高压扭转致纯铜晶粒细化及与应变的关系[J].材料研究学报,2007,21(1):72-76. 被引量：16
4KECSKES L J,CHO K C,DOWDING R J,et al. Grain size engineering of bcc refractory metals:Top-down and bottom-up--Application to tungsten[-J]. Materials Sci- ence and Engineering A,2007,467(1/2):33-43.
5EDALATI K, TOH S,IWAOKA H,et al. Microstruc-tural characteristics of tungsten-base nanocomposites produced from micropowders by high-pressure torsion [J]. Acta Materialia, 2012,60(9) : 3 885-3 893.
6KOLOBOV Y R, KIEBACK B, IVANOV K V, et al. The structure and microhardness evolution in submicro- crystalline molybdenum processed by severe plastic de- formation followed by annealing[J]. International Jour- nal of Refractory Metals and Hard Materials, 2003,21 (1/2) :69-73.
7周晓平,马琳,徐旭耀,冯宗财.仲钼酸铵热分解过程及热力学分析[J].稀有金属与硬质合金,2015,43(3):25-28. 被引量：4
8田野,李萍,王雪,薛克敏.背压对非致密纯相粉末等径角挤压致密固结的影响[J].粉末冶金材料科学与工程,2015,20(1):32-37. 被引量：4
9黄永章,李兴彦,王力军,罗远辉,张力,陈松.高抗拉强度纯钼棒的制备和组织研究[J].稀有金属,2010,34(5):684-688. 被引量：7
10康志新,彭勇辉,赖晓明,李元元,赵海东,张卫文.剧塑性变形制备超细晶/纳米晶结构金属材料的研究现状和应用展望[J].中国有色金属学报,2010,20(4):587-598. 被引量：47
1韩兆越.稀有难熔金属材料产业的发展研究[J].世界有色金属,2017,42(20):224-225. 被引量：2
2陈文静,胡平,邢海瑞,夏雨,李世磊,左烨盖,王快社,冯鹏发,常恬,李来平.热处理工艺对钼金属板材组织和性能影响的研究进展[J].材料导报,2021,35(3):3141-3151. 被引量：5
1薛宗伟,吴锋,李志坚,李心慰,栾旭,罗旭东,徐若梦.氧化钇对氧化镁陶瓷烧结和抗热震性能的影响[J].耐火材料,2019,53(2):96-100. 被引量：5
2金园园,贺卫卫,陈斌科,汤慧萍,向长淑,朱纪磊,邱沙,王宇.球形难熔金属粉末的制备技术[J].航空制造技术,2019,62(22):64-72. 被引量：11
3李欢.探究金属热处理在热能动力工程中的应用[J].中国金属通报,2021(19):84-85. 被引量：1
4安耿,周莎,张晓,席莎,刘仁智.钼管材制备技术及应用研究进展[J].中国钼业,2021,45(6):7-11.
5廖彬彬.单晶硅长晶炉用钨钼制品的质量控制[J].硬质合金,2022,39(1):63-68.
6陈宗福,樊湘芳,王立强,刘新乐,罗权,唐果.固溶时效处理对Ni30高温合金组织和性能的影响[J].材料导报,2023,37(S01):416-420.
7周琳君,李林泽,田亚强,代鑫,陈连生.商用汽车车轮用珠光体钢和双相钢的研究现状[J].金属热处理,2023,48(8):209-218.
1李晓,李萍,薛克敏,王成.高压扭转压力对SiC_p-Al复合材料组织性能的影响[J].中国有色金属学报,2012,22(2):401-407. 被引量：12
2宋斌斌,于涛,张传升,李博研,李新连,郭凯,左宁,赵树利,陈颉.溅射气压对磁控溅射Mo背电极层形貌与结构的影响[J].材料导报,2016,30(16):35-38. 被引量：2
3孟倩,周琦.MoSi_2/Mo叠层复合材料的制备及结构表征[J].甘肃科技,2009,25(1):54-56.
4杨益航.压扭成形中优化摩擦条件的研究[J].金属加工：热加工,2010(19):55-56.
5王光君,王德志,汪异,吴壮志.化学镀铜法制备Mo-Cu复合粉体的研究[J].材料导报,2007,21(F11):272-274. 被引量：1
6马俊林,李萍,徐杰,王成国,刘雨生.高压扭转制备SiC_p/Al复合材料的断裂行为[J].粉末冶金材料科学与工程,2016,21(2):289-294. 被引量：1
7周珑,孙玉静,王聪.溅射工艺对金属Mo膜微观结构及红外反射特性的影响[J].科技传播,2012,4(3):160-162. 被引量：2
8李文方,蒙继龙,杜善义.热残余应变对金属基复合材料拉、压性能的影响[J].金属学报,1995,31(5). 被引量：5
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DOI：
Chinese Library Classification Number:TB331[一般工业技术—材料科学与工程]
Citation Information:
Using the refractory powders of pure molybdenum as raw material, the molybdenum billet with relative density of 96.45% was prepared by high-pressure torsion at 350 ℃ temperature and 1.5 GPa pressure. The rules of pore evolution and densification strengthening were analyzed with various detection methods in the process of high-pressure torsion. The effect was studied of height to diameter ratio of prepressed molybdenum billets on the microstructure and properties of high-pressure torsion molybdenum billets. The results show that the smaller the height to diameter ratio, the greater the material equivalent shear strain,and the higher the relative density and hardness value of high-pressure torsion molybdenum billets. Furthermore,its internal sub-grain size refinement and microscopic strain accumulation are more obvious. When the height to diameter ratio is reduced from 0.5 to 0.3, the dislocation density caused by grain refinement and strain accumulation increases from 1.67 ×10^14 m 2 to 3.03×10^14 m-2.
quote
| GB/T 7714-2015 | [1] TIAN Ye, LIN Quan, SUN Da-zhi, et al. Analysis of Microstructure and Properties of Refractory Metal Molybdenum Prepared by High-pressure Torsion[J]. Rare Metals and Cemented Carbides, 2016(4): 38-42. |
| MLA | [1] TIAN Ye, et al., "Analysis of Microstructure and Properties of Refractory Metal Molybdenum Prepared by High-pressure Torsion." Rare Metals and Cemented Carbides, no. 4, 2016, pp. 38-42. |
| APA | [1] TIAN Ye, LIN Quan, SUN Da-zhi, & LI Ping. (2016). Analysis of Microstructure and Properties of Refractory Metal Molybdenum Prepared by High-pressure Torsion. Rare Metals and Cemented Carbides(4), 38-42. |
| IEEE | [1] TIAN Ye, LIN Quan, SUN Da-zhi, and LI Ping, "Analysis of Microstructure and Properties of Refractory Metal Molybdenum Prepared by High-pressure Torsion," Rare Metals and Cemented Carbides, no. 4, pp. 38-42, 2016. keywords: {molybdenum;pre-pressed molybdenum billet;high-pressure torsion;ratio of height to diameter;microstructure;strength property} |