沉淀强化,precipitation strengthening
1)precipitation strengthening沉淀强化
1.Influence of high temperature aging on precipitation strengthening of Ni-based superalloy;高温时效对高温镍基合金沉淀强化的影响
2.The industrial trial that rolling 590 MPa grade automobile beam steel by using of 510 MPa grade billet was carried out,and the rolling process principles of improving performance through grain refining and precipitation strengthening for V-microalloyed steel was analyed.在攀钢1450热连轧生产线进行了利用510 MPa级化学成分的钢坯轧制590 MPa级汽车大梁钢的工业试验,分析了钒微合金钢通过晶粒细化和沉淀强化提高性能的工艺原理。
3.Results show that such kind of alloy, after aging treatment at 450 ℃ for 4 hours, can reach the maximum strength, and Cr will influence the property of alloy by precipitation strengthening.结果表明 :该合金 45 0℃ 4h时效处理 ,其强度达最大值 ,Cr对合金性能的影响是通过沉淀强化来实现的 ,并对该合金沉淀强化机制的定量关系进行了探
英文短句/例句

1.Analysis of 14MnMoVN Steel Precipitation Hardening Mechanism;14MnMoVN钢沉淀强化机理分析
2.Study on Strengthened Pretreatment for Landfill Leachate by Using Serial Coagulation-precipitation;二级混凝—沉淀强化垃圾渗滤液预处理研究
3.Ductile-brittle Transition Behavior of Heat-affected Zone in Copper Precipitation Strengthening Steel;铜沉淀强化钢焊接热影响区韧脆转变行为研究
4.chemically enhanced primary sedimentation process化学加强初级沉淀法
5.Surface Hardening of Maraging 15-5PH Stell15-5PH马氏体沉淀钢的表面强化
6.Chemical Oxygen Demand--Settled [CODs]化学需氧量(沉淀)
7.Precipitates and Age Hardening in the Nickel Copper Base Alloy Monel K 500一种高强耐蚀镍铜合金的沉淀相与时效硬化
8.Development and Application of V-shape Inclined Plate Enhanced Contact Flocculation SettlerV形斜板强化接触絮凝沉淀设备的研发与应用
9.Research on Treatment of Landfill Leachate by Combination of Coagulating Sedimentation and the Biochemical Process of Strengthened SBR混凝沉淀和强化SBR生化法联合处理垃圾渗滤液的研究
10.the process of forming a chemical precipitate.形成化学沉淀物的过程。
11.wastewater treatment by chemical precipitation process废水的化学沉淀处理法
12.STUDY ON ENHANCED COAGULATION /SEDIMENTATION PROCESS BY RECYCLING SLUDGE FOR REGENERATE WATER REUSE再生水泥渣回流强化混凝沉淀工艺研究及影响因素分析
13.Research on Fretting Wear Properties of Nano-Al_2O_3 Reinforced Copper-matrix Composites Prepared by Coprecipitation Method共沉淀法制备纳米Al_2O_3强化铜基复合材料微动磨损研究
14.Enhancing Coagulation/Sedimentation Process by Recycling Activated Sludge for Treatment of Secondary Effluent from WWTP泥渣回流强化混凝沉淀工艺处理污水厂二级出水
15.(chemistry) of a liquid; floating on the surface above a sediment or precipitate.(化学)液体;在沉渣或沉淀物之上悬浮的。
16.The deposit that results from the process of efflorescing.粉化物风化或粉化过后的沉淀物
17.Deposition-precipitation hydrothermal preparation of TiO_2 and its photocatalytic performance二氧化钛的沉积-沉淀水热制备及其光催化性能
18.Study on coke-plant wastewater treatment by Fenton oxidation-coagulation precipitation methodFenton氧化混凝沉淀法处理焦化废水研究
相关短句/例句

precipitation hardening沉淀强化
1.Results show that the peak precipitation hardening appears at 700 ℃ for V-4Cr-4Ti while at 600 ℃ for the others.结果表明,在1 h等时退火过程中,V-4Cr-4Ti的峰值沉淀强化温度出现在700℃,而其他两种合金出现在600℃。
2.The results show that,under the low-temperature condition,the intensity of this oversaturation solution of the alloys is controlled by processing strengthening in the course of decomposing,while under the high-temperature condition,precipitation hardening is the controlling factor,meanwhile Zn performs the solid solution strengthening function all the time,and tiny dispersed Cr particles w.结果表明,低温条件下,该合金过饱和固溶体分解过程时,加工强化对其强度起主要作用,高温时,沉淀强化是主要控制因素;同时,Zn始终起到固溶强化的作用,细小、弥散的Cr析出相使Cu-17Zn-0。
3.The structure and properties of the high manganese alloy steel after precipitation hardening heat treatment were analyzed.在ZGMn13钢的基础上,通过调整成分,加入适量的合金元素铬、钼,得到新型高锰合金钢,经沉淀强化热处理后对其组织和性能进行了分析。
3)Precipitation strength沉淀强化
1.It was found that during accelerated cooling after finish rolling the finish-cooling temperature and coiling temperature have influence on precipitation strength.发现采用轧后立即水冷工艺方案时,水冷中止温度和卷取温度仅影响钢的沉淀强化组分,而终轧温度变化及轧后延迟水冷时的水冷开始温度对晶界强化组分和沉淀强化组分都有影响。
2.The function in precipitation strength and the boundary cha—raeterstic are also studied with Ag added in the alloy.同时,探讨了Ag在合金沉淀强化中的作用与晶界特性机理。
4)precipitation strengthening沉淀强化[冶]
5)precipitation-hardened stainless steel沉淀强化不锈钢
6)coagulation assisted强化混凝沉淀
延伸阅读

沉淀强化沉淀强化precipitation strengthening 在时效温度下随时间而变化的现象。是20世纪初首先在铝合金中发现的。它是提高材料强度最有效的方法,是铝合金和高温合金的主要强化手段。沉淀强化的基本条件是固溶度随温度下降而降低。 沉淀颗粒的存在对位错运动起障碍作用,因而提高材料对塑性变形的抗力。位错与沉淀颗粒的交互作用很复杂,但可以按几种不同的机制来描述。 奥罗万绕越机制在外加切应力作用下,基体中的运动位错线遇到沉淀相粒子时,位错线在粒子间产生弯曲,弯曲的最小曲率半径为 r Pmln一万石式中r是伯氏矢量为b的位错的线张力,r为外加切应力。当滑移面上粒子间距L)ZPmln时,位错线能在粒子之间绕越过去,并且在颗粒周围留下小位错环。位错环造成的切应力增量为 △r一Gb/L式中G为切变弹性模量。按照位错绕越机制,析出强化效果与颗粒间距成反比。合金的流变应力与析出颗粒的性质无关。这个机制适用于沉淀相颗粒较大、强度较高和间距较宽的情形。相反,当析出粒子间距小于Pmln时,位错不能绕越过去,只能切割颗粒而通过。在这种情况下,合金的流变应力或屈服强度取决于位错与颗粒间的相互作用,与颗粒性质有很大关系。 化学强化当位错剪切颗粒时,将会产生一个附加的颗粒一基体界面,这需要消耗单位面积为rs的能量。假设颗粒为球状,平均半径为<价,体积百分数为f,则化学强化的大小为 r=(6 rsabf/尤厂)“2rs。,位错位于颗粒内较有利以减小其弹性能。要把位错从颖粒中释放出来的最大应力取决于△r=}rsfm一rs司。只要2<价续wm(断为基体中堆垛层错条带的宽度),临界剪切应力的增加为 r=(△r)“‘2(3兀Zf/32乃2)l‘2此方程给出了该机制可以达到的最大强化效果。由于条件2蕊wm只适合于非常小的颗粒(除非rs,很小,因而wm很大),因此上方程只适合于时效的初期。随时效进行,颗粒长大,实际强化作用将小于该式的值。 模量强化模量强化取决于基体与沉淀相模量G和G之差(△G一}G一Gl)。这种强化在理论上较难处理。对于未过时效合金,由于模量强化引起临界剪切应力增加的近似表达式为r二0 .9(厂/b)((r)f)“2(△G/G)3‘2〔Zbln(/ bf,‘2)〕一3‘2 共格强化共格强化起因于共格颗粒的应变场与位错应变场的交互作用。这种交互作用的大小对于球形颗粒由错配度‘决定 :“3肠}占}/(3岛+4G)式中岛为沉淀相的体模量;占二(ap一a)/a,a和外分别为基体和颗粒未畸变时的晶格常数。对泊松比岁一1/3,如基体和颗粒弹性常数相等,则方程简化为£二2占/3o由于沉淀相在过时效后将失去与基体的共格,因此该机制只在峰值时效之前起作用。