Composition Design and Microstructure Analysis of Titanium Microalloyed New Die Steel
Journal Title: 河南科技大学学报（自然科学版） - Year 2019, Vol 40, Issue 5
Abstract
JMatPro software was used to simulate the H13 steel with different mass fraction Ti. According to the calculation results, the new mold steel with different Ti mass fraction was designed. The mechanical properties and microstructure of H13 steel with different Ti mass fraction after heat treatment were analyzed. The results show that it is reasonable to add Ti element mass fraction less than 0.600%. The tensile strength, hardness and plasticity of H13 steel containing trace Ti increase first and then decrease with the increasing of Ti content after quenching and tempering at room temperature. The performance achieves the best when the mass fraction of Ti is 0.127%. The maximum tensile strength and hardness at room temperature are 1 788 MPa and 51.5 HRC, respectively. Compared with H13 steel without Ti, it increases 264 MPa and 3. 7HRC respectively, and the reduction of area increases from 35.0% to 47.0%. The quenching and tempering micro structure of H13 steel with Ti mass fraction of 0%, 0.044% and 0.127% respectively is a mixture micro structure of tempered sorbite and tempered troostite. The quenching and tempering micro structure of H13 steel with Ti mass fraction of 0.325% and 0.536% is tempered sorbite.
Authors and Affiliations
Yongjian WANG, Yanmin ZHANG, Yaoli WANG, Kexing SONG, Yunfei WANG
Keywords
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- EP ID EP594600
- DOI 10.15926/j.cnki.issn1672-6871.2019.05.001
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