EFFECTS OF B4C AND CR3C2 ON MICROSTRUCTURE AND PROPERTIES OF LASER CLADDING CO-BASED ALLOY COATINGS - 文章详情页

作者：

SUN, Y. U. F. A. N. (SUN, Y. U. F. A. N..) | FU, H. A. N. G. U. A. N. G. (FU, H. A. N. G. U. A. N. G..) (学者：符寒光) | CHEN, S. H. U. A. N. G. Y. E. (CHEN, S. H. U. A. N. G. Y. E..) | PING, X. U. E. L. O. N. G. (PING, X. U. E. L. O. N. G..) | SUN, S. H. U. T. I. N. G. (SUN, S. H. U. T. I. N. G..) | GUO, X. I. N. G. Y. E. (GUO, X. I. N. G. Y. E..) | LIN, J. I. A. N. (LIN, J. I. A. N..)

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SCIE

摘要：

Based　on　the　background　of　automotive　mold　surface　strengthening,　the　effects　of　three　different　enhancements　on　the　microstructure　evolution,　micro-hardness　and　wear　resistance　of　laser　cladding　cobalt-based　coatings　were　studied.　The　three　reinforcing　materials　were　Co45　alloy　powder,　Co45/8%　B4C　mixed　powder　and　Co45/8%　B4C/5%　Cr3C2　mixed　powder.　They　were　respectively　used　to　conduct　laser　cladding　on　the　surface　of　die　steel　with　preset　powder　method,　with　laser　power　of　2000W　and　scanning　speed　of　4mm/s.　According　to　the　test　results,　the　hardness　and　wear　resistance　of　the　cladding　coating　were　the　best　when　Co45/8%　B4C　powder　was　added.　In　addition,　the　study　also　found　that　B4C　reacted　with　Cr3C2　during　laser　cladding　to　eventually　generate　Cr2B.　The　CrB2　generated　for　the　first　time　during　the　reaction　was　transformed　into　the　most　stable　Cr2B　with　an　orthorhombic　Fddd　symmetry　due　to　its　poor　stability.　Therefore,　the　sample　with　Co45/8%　B4C/5%　Cr3C2　mixed　powder　was　affected　with　a　slight　decrease　in　microhardness　and　wear　resistance.

关键词：

boron carbide chromium carbide cobalt-based alloy coating Laser cladding micro-hardness wear resistance

作者机构：

[ 1 ] [SUN, Y. U. F. A. N.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 2 ] [FU, H. A. N. G. U. A. N. G.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 3 ] [CHEN, S. H. U. A. N. G. Y. E.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 4 ] [PING, X. U. E. L. O. N. G.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 5 ] [SUN, S. H. U. T. I. N. G.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 6 ] [GUO, X. I. N. G. Y. E.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 7 ] [LIN, J. I. A. N.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China
[ 8 ] [CHEN, S. H. U. A. N. G. Y. E.]Beijing Univ Technol, Fac Informat Technol, Beijing 100124, Peoples R China

通讯作者信息：

[SUN, Y. U. F. A. N.]Beijing Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Funct Mat, 100 Pingle Garden, Beijing 100124, Chaoyang Distri, Peoples R China

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