利用OM,XRD,SEM和EPMA等手段研究了Al-3Ti-3B细化剂对AZ31镁合金微观组织的影响.结果表明,添加适量的Al-3Ti-3B细化剂能使铸态AZ31镁合金粗大的树枝晶转变为均匀的等轴晶;加入量为0.4%时取得了较好的细化效果,固溶处理后的AZ31镁合金平均晶粒尺寸由300μm减小到50μm.TiB2和AlB2粒子的异质形核作用是促使晶粒...
百度试题 题目下述氢氧化物中不能稳定存在的是()。 A.Al(OH)3B.Ga(OH)3C.In(OH)3D.TI(OH)3相关知识点: 试题来源: 解析 D 反馈 收藏
百度试题 题目3.下列氢氧化物不能存在的是 A Al(OH)3 B Ga(OH) C In(OH) D TI(OH相关知识点: 试题来源: 解析反馈 收藏
The phonon dynamics of longitudinal and transverse phonon eigen frequencies of the hexanary Ti60Zr16V9Cu3Al3Be9 bulk metallic glass (BMG) have been studied by applying BS computational approach. In absence of experimental findings, the pair correlation function g(r) is generated from interatomic ...
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Cao and T. Li, "A novel fading-resistant Al-3Ti-3B grain refiner for Al-Si alloys", Journal of Alloys and Compounds, 511 (2012), 45-49.Wang T M,Fu H W,Chen Z N,Xu J,Zhu J,Cao F,Li T J.A novel fading-resistant Al-3Ti-3B grain refiner for Al-Si alloys. Journal of ...
百度试题 结果1 题目下述氢氧化物中不能稳定存在的是()。 Al(OH)3 B. Ga(OH)3 C. In(OH)3 D. TI(OH)3 相关知识点: 试题来源: 解析 D 反馈 收藏
研究了Al3Ti3B中间合金对AZ91D镁合金显微组织及力学 性能的影响.通过光学显微镜和扫描电子显微镜观察发现,Al3Ti3B中间合金能显著减小AZ91D合金的二次枝晶臂间距与晶粒尺寸,在加入 0.3%Al3Ti3B时晶粒尺寸就由原来的约260 μm减小至约100μm.伴随着合金晶粒尺寸的减小,合金的抗拉强度,屈服强度和延伸率都明显提高,...
It is very desirable to involve TiAl_3 particles in the Al-3Ti-3B master alloy to maximize its grain refining efficiency. However, fading phenomenon is a key drawback for application of the TiAl_3 -containing refiners in aluminum foundry. In the present work, new Al-3Ti-3B grain refiners...
In addition, B-rich Al-3B master alloy shows efficient grain refinement than Ti rich Al-3Ti master alloy.S. A. KoriV. AuradiInternational Conference on Advanced Materials and Processing