| 再结晶对Ni（47）Ti（44）Nb9形状记忆合金棒相变和织构的影响 | |
| Alternative Title | Influence of Recrystallization on Phase Transformation and Texture of Ni47Ti44Nb9 Shape Memory Alloy Bar |
| 颜莹; 金伟 | |
| 2008 | |
| Source Publication | 稀有金属
 |
| ISSN | 0258-7076 |
| Volume | 32.0Issue:004Pages:404-408 |
| Abstract | 利用光学显微镜（OM）,DSC和XRD,研究了直径19 mm Ni47Ti44Nb9热轧棒材再结晶对相变和织构的影响,为该合金棒的实际应用提供理论依据。结果表明：热轧棒从450℃开始发生明显再结晶;从850℃/90 min真空退火棒材的中心到边缘,再结晶晶粒尺寸减小,Ms降低,马氏体转变区间变窄,热滞增大;热轧棒中形成了较强的γ丝织构,600℃/90 min退火后,γ丝织构强度稍有下降,退火温度升到850℃,丝织构明显减弱,等密度线发生漫散,形成了新的织构组分,这有利于改善棒材径向方向的恢复应变。 |
| Other Abstract | The influences of recrystallization on phase transformation and texture of as-hot-rolled Ni47Ti44Nb9 alloy bar with a diameter of 19 mm were systematically investigated using optical microscope （OM）, differential scanning calorimetry （DSC） and X-ray diffraction （XRD） to provide theoretical basis for application of the alloy bar. The results showed that the recrystallization of the hot-rolled bar started obviously at 450 ℃, and recrystallized grain size was decreased and M, dropped. Temperature ranges of martensitic transforma-tion became narrower and thermal hystereses increased from the center to the edge of the bar vacuum annealed at 850 ℃/90 min F.C. More intensive 7 fibre texture was formed in the as-hot-rolled bar. But intensity of 7 fibre texture in the bar annealed at 600 ℃/90 min F.C was slightly decreased. When annealing temperature was 850 ℃, 7 fibre texture was markedly weakened, the diffusion of the isopycnals occurred, and new texture components were formed, which was beneficial to improving restoration strain of the bar along radial direction. |
| Keyword | 形状记忆合金 再结晶 织构 相变 Ni47Ti44Nb9棒 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:3386661 |
| Citation statistics |
Cited Times:5[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141992 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | 颜莹,金伟. 再结晶对Ni（47）Ti（44）Nb9形状记忆合金棒相变和织构的影响[J]. 稀有金属,2008,32.0(004):404-408. |
| APA | 颜莹,&金伟.(2008).再结晶对Ni（47）Ti（44）Nb9形状记忆合金棒相变和织构的影响.稀有金属,32.0(004),404-408. |
| MLA | 颜莹,et al."再结晶对Ni（47）Ti（44）Nb9形状记忆合金棒相变和织构的影响".稀有金属 32.0.004(2008):404-408. |
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