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- The relationship between fracture toughness and notch toughness, tensile ductilities in lath martensite steel has been investigated. 研究了超高强度板条马氏体钢的平面应变断裂韧性与缺口韧性、拉伸塑性之间的关系。
- lath martensite steel 板条马氏体钢
- When increasing the time of inducing-heat quenching, the steel shows that the quantity of lath martensite increases but decreases with twin martensite. 力学性能测试显示:本试验用超高碳钢强度与中碳结构钢相当;
- The phases of quenched 4Cr4Mo2SiV steel include mixed martensite (mainly lath martensite), non-solutioned carbides and residual austenite. 4Cr4Mo2SiV淬火后的组织是以板条马氏体为主的混合型马氏体+未溶碳化物+残余奥氏体。
- When austenitizing temperature is higher than a critical temperature,full lath martensite can be obtained in medium and high carbon steel. 钢的含碳量越高,获得全部板条马氏体的临界奥氏体温度越高。
- The results indicated that the steel is composed of quasi bainite, lath martensite and twin martensite under air cooling condition, and also has better combination of strength and toughness. 试验表明:该钢空冷条件下即可获得准贝氏体、板条马氏体及孪晶马氏体的复合组织,且具有较好的强韧性配合。
- Microstructure of heat-affect zone (HAZ) is mainly lath martensite, bainite and residual austenite. 热影响区(HAZ)组织主要为板条马氏体、贝氏体和少量残余奥氏体;
- The result indicates that there was a great deal of lath martensite in the quenched structure. 显微组织中存在大量板条马氏体,组织亚结构中存在大量位错和孪晶。
- The results are as follows:the higher the austenitizing temperature,the more the amount of lath martensite is. 结果表明,奥氏体化温度越高,获得板条马氏体的量越多,奥氏体化温度超过某个临界值时,中高碳钢均可获得全部板条马氏体组织。
- Experiments show that the dual phase structure suitable to wire drawing consists of fine ferrite islands dispersed in the matrix of lath martensite. 实验表明,适于拔丝的双相组织是在板条马氏体基体上分布着细小的铁素体岛。
- Especially the polymer by ion beam processing exceeds martensite steel in the surface hardness. 特别是其表面硬度远高于目前公认的最硬的马氏体钢,其耐磨性明显优于滚珠轴承钢。
- The structure of homogeneous and stable lath martensite as matrix with stable fine vanadium carbides on is of advantage to resist thermal fatigue and wear. 基体组织为均一、稳定的板条马氏体,且在其上分布着弥散、稳定的钒的碳化物,有利于抗热疲劳和抗磨损。
- The martensite in low and medium carbon alloy steels mainly is lath martensite of dislocation substructure besides little twin substructure at the segregation regions of chemical composition. 低、中碳合金钢中的马氏体除局部区域因成分偏析呈孪晶亚结构外,主要是位错亚结构的板条马氏体。低碳合金钢的中温转变组织主要有兰类,即粒状组织、上贝氏体和下贝氏体。
- Nitrogen alloyed austenitic steels showed excellent ballistic property,higher than that of martensite steel. 含氮奥氏体钢具有优良的抗弹性能,并优于传统马氏体钢的抗弹性能。
- 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。
- For mass efficiency of penetration,martensite steel increases in line with strength,and nitrogen alloyed au-stenitic steel is much higher than that of the same strength martensite steel. 马氏体钢抗杆式模拟弹防护系数随着强度的提高而提高,呈线性关系,含氮奥氏体钢穿甲防护系数远远高于同一强度级别的马氏体钢。
- Keywords 15 steel;electropulsing;lath martensite;recrystallization; 15钢;电脉冲;板条马氏体;再结晶;
- By the penetration and ballistic test for different state nitrogen alloyed austenitic steels and low alloyed martensite steel,their penetration mechanism was analysed. 对不同状态含氮奥氏体钢板和马氏体钢板进行了抗枪弹与抗杆式模拟弹试验,分析了它们的穿甲机理。
- Hydrogen embrittlement can become important in martensitic steels. 马氏体钢容易出现氢脆现象。
- Keywords fine grain steel;lath martensite;adhesion abrasion;abrasive wear; 细晶粒钢;板条马氏体;粘着磨损;磨粒磨损;