热处理工艺对塑料模具钢10Ni3MnCuAl组织、晶粒度和性能的影响  

Effect of Heat Treatment on the Microstructure, Grain Size and Properties of Plastic Die Steel 10Ni3MnCuAl

作　　者：冯淑玲 刘明 

机构地区：[1]抚顺特殊钢股份有限公司,辽宁抚顺113001

出　　处：《模具制造》2017年第7期82-85,共4页Die & Mould Manufacture

摘　　要：利用金相和冲击试验方法测定了10Ni3MnCuAl正、回火和淬、回火处理后的组织、晶粒度和冲击韧性。结果表明,试验钢通过正火可显著改善组织均匀性和细化晶粒,晶粒度由淬、回火状态的2级提高到7级,950℃为试验钢的最佳正火温度;试验钢经过950℃正火和520℃回火处理后组织为回火贝氏体,回火后硬度为41.3HRC,冲击值达到13.3J,相对880℃淬火和520℃回火冲击值有显著提高。In this paper, microstructure, grain size and the impact toughness of normalizing, tempering and quenching, tempering of 10Ni3MnCuAI have been test by using the metallographic and impact. The result show that, microstructure and grain size of the test steel have been uniformity and refinement by normalizing, grain size increased from 2 grade of quenching and tempering to 7 grade, 950℃ is best normalizing temperature of tested steel： Microstructure of the test steel was Tempered Bainite through 950℃ normalizing and 520℃ tempering, tempering hardness was 41.3HRC, the impact value was 13.3J, significantly improving compare to 880℃ quenching and 520℃ tempering.

关 键 词：正火 10NI3MNCUAL 组织 晶粒度 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG161[金属学及工艺—金属材料]