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| 1 | On some aspects of compressive properties and serrated flow in Mg-Y-Nd-Zr alloy显示文摘The deformation behavior of the Mg-Y-Nd-Zr (WE54) alloy at temperatures between 25 and 400 ℃ was investigated by uniaxial and plans strain compression tests at strain rate values of 10-2 and 10-4s-1 . The results showed that the flow stress had a strong dependency on the loading condition. Yield stress and peak stress decreased with increasing deformation temperature and with decrease in the strain rate for both deformation types. The serration flow behavior was observed markedly at high temperatures and under a strain rate of 10-4s-1 . The serration amplitude for samples deformed by plans strain compression was larger than that by uniaxial compression. Serrated flow was attributed to the interaction of dislocations with precipitates at 300 ℃ and to dynamic discontinuous recrystallization effects at 400 ℃. | H.Azzeddine D.Bradai | 2013 | Journal of Rare Earths2013，31，8： | 5 |
| 2 | Grain growth in AZ31 alloy after uniaxial compression显示文摘The grain growth morphology,kinetics and texture change after uniaxial compression at 430 ℃ of an extruded AZ31 alloy were studied.The samples were loaded following two routes insuring two initial textures of the samples with compression direction parallel and normal to the extrusion direction.For both initial textures,a stable grain size is attained upon isothermal annealing and the grain growth kinetics can be described by:dn= dRn+kt with an n value of around 15.The annealing texture with grown grains is a retained hot deformation texture without emerging or strengthening other components.Abnormal grain growth is not observed for annealing time up to 10 000 h at 450℃. | S.ABDESSAMEUD H.AZZEDDINE B.ALILI D.BRADAI | 2010 | Transactions of Nonferrous Metals Society of China2010，20，12： | 3 |
| 3 | Pb-Ca-Sn合金的变形与再结晶组织、微观结构和动力学(英文)显示文摘在室温下将Pb-0.08Ca-2Sn合金轧制到不同厚度。电阻率和显微硬度的测试结果表明,样品在80~120°C的温度区间退火时发生再结晶。XRD检测确定变形组织为Brass型,所测得的Lankford各向异性参数R及其变化与用自洽方法所推导的结果接近。R值随轧制方向角度的改变表明该合金具有平面各项异性和较差的延展性。合金在80~120°C的温度范围内退火时,在3×104s内完成再结晶,显示出保留变形组织并有新Cube组元出现。 | F.ABOUHILOU H.AZZEDDINE B.MEHDI B.ALILI D.BRADAI | 2011 | Transactions of Nonferrous Metals Society of China2011，21，8： | 3 |
| 4 | 冷加工Cu-Ni-Si和Cu-Ni-Si-Cr合金的分析(英文)显示文摘研究经冷加工和退火处理的过饱和Cu-2.65Ni-0.6Si和Cu-2.35Ni-0.6Si-0.6Cr合金。采用软件MAUD分析其显微组织参数的演变,包括晶粒尺寸、应变均方根和位错密度等。结果表明,经过冷加工和退火处理的两种合金的显微组织参数都具有特定值。在450℃时效2.5~3h的合金,其晶粒尺寸、应变均方根和位错密度等参数的净变化量与回复和再结晶过程相关。Cr作为第四组元添加到合金中没有明显改变形变和时效处理后合金的结构参数,因此也不影响合金的回复再结晶动力学。 | A.KHEREDDINE F.HADJ LARBI L.DJEBALA H.AZZEDDINE B.ALILI D.BRADAI | 2011 | Transactions of Nonferrous Metals Society of China2011，21，3： | 2 |
| 5 | AZ91镁合金热轧退火过程中的织构演变(英文)显示文摘将具有随机初始织构的工业AZ91镁合金在450℃进行均匀化热处理。经热处理后,合金中出现弱的{0001}–{1010}–{1120}三重纤维织构。经400℃热轧后,合金的变形织构是典型的(0001)基面,其基极沿轧制方向分裂。在450℃退火36 h后,其残余变形织构中的基极沿基面分布更均匀,没有出现晶粒的异常长大。 | B.ALILI H.AZZEDDINE K.ABIB D.BRADAI | 2013 | Transactions of Nonferrous Metals Society of China2013，23，8： | 2 |
| 6 | 冷加工变形Pb-Ca-Sn合金位错类型、密度和晶粒尺寸分布的X射线衍射峰形分析(英文)显示文摘利用X射线衍射峰形分析方法,研究冷加工变形Pb-Ca-Sn合金的位错类型、密度和晶粒尺寸分布。结果表明:该合金的位错密度在1010cm-2数量级。衍射谱峰形的应变宽化可用位错对比因子来解释。利用新开发的PM2K软件包计算了晶粒尺寸。通过假设晶粒尺寸呈对数正态分布,利用X射线峰形分析得到的晶粒尺寸参数可得到晶粒分布函数。 | F.ABOUHILOU A.KHEREDDINE B.ALILI D.BRADAI | 2012 | Transactions of Nonferrous Metals Society of China2012，22，3： | 1 |
| 7 | Unveiling the Residual Stresses,Local Micromechanical Properties and Crystallographic Texture in a Ti-6Al-4V Weld Joint显示文摘In this work,the micromechanical properties,crystallographic texture,welding residual stresses and their evolution after plastic strain were investigated in a Ti-6Al-4V alloy tungsten inert gas weld joint.It was found that the welding process affected the Young modulus and microhardness values in bothαandβphases in the different regions of the weld joint.The highest microhardness and Young modulus values of a phase were recorded in the heat-affected zone,whereas the highest values of these characteristics for theβphase were found in the fusion zone(FZ).The change in the micro mechanical properties was accompanied by a change in the crystallographic texture components of the dominant a phase from(0001)<10-10>and(11-20)<10-10>components in the base material to(10-10)<11-20>and(11-20)<3-302>components in the FZ.The introduction of tensile testing resulted in a continuous stress relaxation and improved the weld joint performances. | B.Mehdi R.Badji V.Ji B.Alili D.Bradai W.Bedjaoui F.Deschaux-Beaume F.Brisset | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，7： | 1 |
| 8 | 等径转角挤压Cu-Cr-Zr合金的差热分析(英文)显示文摘对Cu-1Cr-0.1Zr合金在室温下进行16道次等径转角挤压(ECAP),挤压路径为B_c。利用差热分析研究合金中沉淀相的析出序列,计算每道次ECAP后合金储能、再结晶温度以及激活能。此外,对位错密度与电学性能之间的关系进行研究。结果表明:随着ECAP挤压道次的增加,合金中的储能增加,而再结晶温度则大幅度降低。 | K.ABIB F.HADJ LARBI L.RABAHI B.ALILI D.BRADAI | 2015 | Transactions of Nonferrous Metals Society of China2015，25，3： | 1 |
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