After tempering treatment at different conditions, the tempering stability of Fe-base hardfacing layer containing RE and multiple alloying was investigated. The results show that after heat preservation at 560 ℃ and ...After tempering treatment at different conditions, the tempering stability of Fe-base hardfacing layer containing RE and multiple alloying was investigated. The results show that after heat preservation at 560 ℃ and tempering for 4 h the hardness value of Fe-base hardfacing layer containing RE and multiple alloying can reach HRC57; By repeatedly heating circle 700 ℃17 ℃ for 150 times, the hardness value of Fe-base hardfacing layer can reach HRC43, tempering stability is higher and causes the secondary hardening phenomenon. Reasons for higher tempering stability of Fe-base hardfacing layer were analyzed by means of metallographic, XRD, TEM and EDS.展开更多
文摘After tempering treatment at different conditions, the tempering stability of Fe-base hardfacing layer containing RE and multiple alloying was investigated. The results show that after heat preservation at 560 ℃ and tempering for 4 h the hardness value of Fe-base hardfacing layer containing RE and multiple alloying can reach HRC57; By repeatedly heating circle 700 ℃17 ℃ for 150 times, the hardness value of Fe-base hardfacing layer can reach HRC43, tempering stability is higher and causes the secondary hardening phenomenon. Reasons for higher tempering stability of Fe-base hardfacing layer were analyzed by means of metallographic, XRD, TEM and EDS.
