激光增材制造成型马氏体时效钢研究进展

谭超林,周克崧,马文有,曾德长

Research Progress of Laser Additive Manufacturing of Maraging Steels

Chaolin TAN,Kesong ZHOU,Wenyou MA,Dechang ZENG

表2 SLM成型18Ni300马氏体时效钢热处理工艺及其力学性能[4,16,38,46,49,51,52,54,56,57,58,59]

Table 2 Post heat treatments and achievable properties of SLM-produced grade 300 maraging steels[4,16,38,46,49,51,52,54,56,57,58,59]

AF or HTed UTS / MPa YS / MPa El / % Hardness Ref. SLM AF 1065 901 11.5 30 HRC [46] 840 ℃+490 ℃, 6 h 998 1895 4.5 52 HRC SLM AF 1165±7 915±7 12.4±0.1 35~36 HRC [16] 490 ℃, 6 h 2014±9 1967±11 3.3±0.1 53~55 HRC 840 ℃+490 ℃, 6 h 1943±8 1882±14 5.6±0.1 52~54 HRC SLM AF 1178 - 7.9 381 HV [49] 840 ℃+480 ℃, 6 h 2164 - 2.5 646 HV SLM AF 1290±114 1214±99 13.3±1.9 396 HV [51,56] 480 ℃, 5 h 2217±73 1998±32 1.6±0.3 635 HV SLM AF 1192 - 8 35 HRC [52] SLM AF 1100 1050 12.1 About 420 HV [38] 490 ℃, 6 h 1800 1720 4.5 About 600 HV SLM AF 1125 - 10.4 About 400 HV [54] 820 ℃+460 ℃, 6 h 2033 - 5.3 618 HV SLM AF About 1190 - About 12.5 About 350 HV [57] 490 ℃, 3 h About 1860 - About 5.6 About 560 HV SLM AF 1188±10 915±13 6.2±1.3 - [58] 460 ℃, 8 h 2017±58 1957±43 1.5±0.2 - 600 ℃, 10 min 1659±119 1557±140 1.6±0.1 - Wrought 1000~1170 760~895 6~15 35 HRC [56] Wrought aged 1930~2050 1862~2000 5~7 52 HRC [4,59]