JP2017206771A JP2017104818A JP2017104818A JP2017206771A JP 2017206771 A JP2017206771 A JP 2017206771A JP 2017104818 A JP2017104818 A JP 2017104818A JP 2017104818 A JP2017104818 A JP 2017104818A JP 2017206771 A JP2017206771 A JP 2017206771A Authority JP Japan Prior art keywords steel wear resistant steel martensite …
JP3070658B2 JP8080888A JP8088896A JP3070658B2 JP 3070658 B2 JP3070658 B2 JP 3070658B2 JP 8080888 A JP8080888 A JP 8080888A JP 8088896 A JP8088896 A JP 8088896A JP 3070658 B2 JP3070658 B2 JP 3070658B2 Authority JP Japan Prior art keywords weight wear resistance toughness amount wear Prior art date Legal status (The legal status is …