effect of austempering conditions on the microstructure and mechanical properties of aisi 4340 and aisi 4140 steels参考文献.pdf

j m a t e r r e s t e c h n o l . 2 0 1 9;8(6):5194–5200
Lahore, Pakistan
c

School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology (NUST), H-12, Islamabad,
Pakistan
d

Department of Materials Science and Engineering, Institute of Space Technology, Islamabad, Pakistan
e

National Engineering and Scientific Commission, Islamabad, Pakistan

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Article history: AISI 4340 and AISI 4140 are normally used for different structural applications in quenched