关于机械方面的英语论文，求一篇机械类的英文论文3000词左右

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1，求一篇机械类的英文论文3000词左右

memories and fancies. In short, they have

一篇机械类的英文论结果，我能肯定好的

给楼主找了，这篇可以。pdf格式的http://www.berr.gov.uk/files/file19296.pdf

求一篇机械类的英文论文3000词左右

2，急求一片机械专业的英文小论文不用太长一张多点A4就行

1.Introduction 1.介绍The precipitation and growth of aluminum nitride in low carbon Al-killed steel is one of the fundamental metallurgical processes that affect the final microstructure and properties (Ref 1). 氮化铝的析出和生长是低碳铝镇静钢最基本的冶金过程，它影响最终的金相组织和性能。The microstructure of steel evolves during hot rolling and cooling process. 热轧及冷却过程中钢的金相组织的演变。The various important factors, which affect the microstructure of the steel, are dissolution of AlN during heating and soaking, strain-induced precipitation of AlN during hot rolling, interpass recrystallization, austenite grain coarsening, finish rolling temperature (FRT), and cooling of the strip.影响钢金相组织的各种重要因素是：加热及均热过程中氮化铝的溶解、氮化铝在热轧过程中的应变诱导析出、层间再结晶、奥氏体晶粒粗化、扎制结束温度和钢带的冷却。 The evolution of grain size has been shown (Ref 2) to be different in low-carbon steel than that of other steels.低碳钢晶粒大小的演变与其它钢不同。 Thin slab casting and rolling (TSCR) of low-carbon steel has some distinguished characteristics, such as finer microstructure.连铸连轧低碳铝镇静钢拥有卓越的性能，例如出色的金相组织。 Much faster cooling rate and rapid solidification (Ref 3) in association with liquid core reduction result in finer grains in thin slabs as compared to conventional thick slabs.与传统的厚板相比，薄板冷却快速、凝固快速和液核少。 This initial austenite grain size of slab plays an important role for controlling the final microstructure of the strip.这个初始奥氏体晶粒尺寸对最终钢带的金相组织控制有重要作用。 During casting, some aluminum nitrides also precipitate in thin slabs before entry into the tunnel furnace and may not dissolve during heating and soaking (Ref 4) at 1150°C for about 22 min.在铸造期间，有一些氮化铝在进入隧道炉之前在薄板里析出，析出的氧化铝在加热及均热（1150°C ，22 分钟）期间可能不会分解。 These fine precipitates restrain the growth of recrystallized austenite grains, which significantly affect the final microstructure.这些细小的析出相抑制了再结晶奥氏体晶粒的增长，从而影响了最终金相组织。Further, during hot rolling process some amount of fine AlN precipitates at different stages because of strain and decrease in temperature.而且在热轧过程期间的应变及降温也会使氮化铝析出。 These precipitates inhibit austenite grain growth by pinning grain boundaries leading to refining of austenite and hence ferrite grains.这些析出的氮化铝抑通过限定边界来制奥氏体的增长，从而细化奥氏体晶粒和和铁素体晶粒。

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急求一片机械专业的英文小论文不用太长一张多点A4就行

3，谁能帮我翻译一篇机械专业的英语论文不要直接用翻译机1500字

Effect of Hot Rolling Process on Microstructureand Properties of Low-Carbon Al-Killed Steels热轧工艺对于低碳涂铝钢的微观结构以及性能的影响。Produced Through TSCR TechnologyS.K. Paul, U. Ahmed, and G.M. Megahed(Submitted October 29, 2009; in revised form April 27, 2010)低碳涂铝钢经过薄板坯连铸连轧技术制造（S.K. Paul, U. Ahmed, and G.M. Megahed2009年10月29号提交，2010年4月27号修订）Low-carbon Al-killed hot rolled strips for direct forming, cold rolling, and galvanizing applications are produced from the similar chemistry at Ezz Flat Steel (EFS) through thin slab casting and rolling (TSCR) technology. 用于直接成型，冷轧，以及镀锌应用的低碳热轧条与埃智钢铁公司的扁钢薄板坯连铸连轧技术有着相似的化学处理过程。The desired mechanical and micro structural properties in hot bands for different applications are achieved through control of hot rolling parameters, which in turn control the precipitation and growth of AlN. 通过控制热轧参数，并相应地控制沉淀物以及氮化铝的增长，能够获得热扎带的预期的机械和微结构性能，用于不同的应用。Nitrogen in solid solution strongly influences the yield strength (YS), ductility, strain aging index(SAI), and other formability properties of steel.固溶体的氮严重影响抗屈强度，延展性，应变指数以及钢的其他成型性能。The equilibrium solubility of AlN in austenite at different temperatures and its isothermal precipitation have been studied. To achieve the formability properties for direct forming, soluble nitrogen is fixed as AlN by coiling the strip at higher temperatures. 我们已经研究过在不同温度的奥氏体氮化铝的溶解度以及等温过程的沉淀物。为获得用于直接成型的成型性能，在高温下将钢条盘成螺旋形，填充可溶性氮作为氮化铝。For stringent cold forming, boron was added below the stoichiometric ratio with nitrogen, which improved the form ability properties dramatically. 为了冷成型，将硼以理想配比值与氮进行配比，这很大程度上提高了成型性能。The requirements of hot band for processing into cold rolled and annealed deep drawing sheets are high SAI and fine-grain microstructure. 用于加工成高指标以及粒状结构的冷轧以及退火的深冲压板的热轧钢的要求Higher finish rolling and low coiling temperatures are used to achieve these. 未获得以上目的，需要更高的轧制以及低卷取温度。Fully processed cold rolled sheets from these hot strips at customer send have shown good formability properties. 从这些热条钢完全加工而成的冷轧板，客户反馈说有很好的成型性能。Coil break marks observed in some coils during uncoiling were found to be associated with yielding phenomenon. 在一些盘卷上我们观察到了卷裂的印记，这关联到屈变现象。The spike height (difference between upper and lower yield stresses) and yield point elongation (YPE) were found to be the key material parameters for the break marks.尖峰的高度（上部和下部的屈服应力的差异）以及屈服点延伸是导致破裂印记的主要的材料性能。Factors affecting these parameters have been studied and the coiling temperature optimized to overcome the problem.影响这些参数的因数已被研究，我们会将卷取温度最优化来克服这个问题。

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谁能帮我翻译一篇机械专业的英语论文不要直接用翻译机1500字