Mg对退火后H13模具钢力学性能的影响  

Effect of Magnesium on Mechanical Properties of H13 Die Steel after Anneal

作　　者：李勇勇[1] 王亮亮[1] 宁博[1] 

机构地区：[1]北京科技大学冶金与生态工程学院钢铁冶金新技术国家重点实验室,北京100083

出　　处：《南方金属》2013年第2期48-53,共6页Southern Metals

摘　　要：利用广州冶金研究所生产的H13模具钢为原料,通过对不同热处理阶段钢的力学性能进行测试并微观分析,得出结论:Mg的加入对H13模具钢的力学性能有一定影响,常规完全退火下无Mg钢强度跟硬度较高,韧性较低.含Mg钢出现含Mg、Al类复合夹杂物,成为裂纹扩展源.H13 die steel which is producted by Metallurgical Research Institute Guang Zhou is used as the raw material in this paper. Through the test of the mechanical properties of the steel in different heat treatment stage, come to this conclusion： The accession of Mg have some influence on the mechanical properties of H13 die steel. In the condition of full annealing, the strength and hardness of non-Mg-eontaining H13 die steel is higher,the toughness is lower. There are some Mg-A1 complex inclusions in Mg-containing H13 die steel which can be crackle extended source.

关 键 词：Mg H13模具钢 强度 硬度 

分 类 号：TG142.14[一般工业技术—材料科学与工程]