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- Keywords strengthening and malleablizing;fracture toughness;acicular martensite;lath martensite. hot die steel; 强韧化;断裂韧性;针状马氏体;板条马氏体;热模钢;
- coarse acicular martensite 粗针状马氏体
- acicular martensite 针状马氏体
- The microstructures of the carburized layer consist of fine martensite with a small amount of retained austenite in surface layer and lath martensite with acicular bainite in ransition l... 表层组织为细小分散马氏体+少量残留奥氏体,过渡层为针状贝氏体+板条马氏体,心部主要为束状贝氏体。渗层耐磨性好,基体力学性能优良,能很好地满足齿轮的服役条件。
- Martensite lath changes into fine tempered sorbite w. 材料经高温回火得到细小回火索氏体,力学性能优良。
- The microstructure of isothermally-quenched ductile iron (ADI) is a mixture structure consisting of austenite plus acicular ferrite. 摘要等温淬火球铁的显微组织由奥氏体加针状铁素体的混合组织组成。
- Crack propagation from the flameout edge can be modeled by considering an edge crack in the martensite surface from flame cutting. 裂纹从烧割边缘的扩展可模拟为一个从烧割处的马氏体表面起始的边裂纹。
- By observing microstructures , we find they may form spheroidal A,acicular A and feathery A . 组织观察发现,除形成球状A、针状A外,还形成羽毛状A。
- The extract was further purified by column chromatography to get the acicular crystals of reserpine of 99. 将萃取所得产物用硅胶柱色谱进一步分离提纯;得到了质量分数为99.;8%25的利血平针状结晶。
- A double acicular electrostatic device was designed.Experiments were conducted with an experimental model established. 摘要在高射程喷雾机上设计了双针电晕静电装置,并对实验模型进行了相关试验。
- The acicular and columnar shapes of aragonite crystals are preserved even after aragonite changes into calcite. 文石转变为方解石常保留文石的针状、柱状晶形,并存在于石笋沉积生长的始终。
- Special, highly alloyed welding wire for aluminium pressure molds. Martensit hardening. Good filing qualities. 这是一种特殊的合金焊丝,用于压铝模具的修补中,具有较高的焊接硬度和良好的堆焊性能。
- The iron content of grainy crystal was the most, acicular crystal taking second place. 表面有粒状析晶的磁珠中铁含量最高,针状析晶磁珠次之。
- The proportion of austenite in the matrix of as-cast cast iron 290Cr26MoW increases but that of martensite decreases. 铸态290Cr26MoW耐磨白口铸铁基体的奥氏体比例增加,马氏体减少。
- Herbs annual; bracts of female flowers connate to apex, both sides with an acicular appendage near apex. 一年生草本雌花苞片在先端合生,两面具一针状的附属物近先端。
- As for small diameter workpiece, martensite distribution can be obtained by immediately quenching. 对于直径较细的工件,轧后立即淬火几乎可得到全部马氏体。
- A hard supersaturated solid solution of iron characterized by an acicular (needle-like) microstructure. 一种以针尖状微观结构为特征的铁的硬饱和的固溶体。
- Matrix should be of martensite, because it can resist impact and has little deformation. 基体应是马氏体,它能抵抗冲击,变形小。
- Branchlets black-brown, terete, glabrous or sparsely acicular hirsute, with elliptic lenticels. 小枝黑棕色,圆柱状,无毛或者稀少针状多毛,带有椭圆的皮孔。
- Tmis paper deals with the ordering of Fe-1.83C(Wt%)martensite during aging at roomtemperature. 利用透射电镜对Fe-1.;83C马氏体室温时效所产生的有序化进行了详细的研究。