热处理
熱處理
열처리
HEAT TREATMENT
2014年
1期
37-40
,共4页
戴晟%曹芬燕%方淳%朱流
戴晟%曹芬燕%方淳%硃流
대성%조분연%방순%주류
激光熔覆%等离子渗氮%FeMnCrAl涂层%耐磨损性能
激光鎔覆%等離子滲氮%FeMnCrAl塗層%耐磨損性能
격광용복%등리자삼담%FeMnCrAl도층%내마손성능
laser cladding%plasma nitriding%FeMnCrAl coating%wear resistance
采用激光熔覆与等离子渗氮相结合的工艺在45钢表面制备了高氮FeMnCrAl涂层。采用扫描电镜（ SEM）、能谱分析（ EDS）、X射线衍射（ XRD）及硬度试验等方法研究了高氮FeMnCrAl涂层的显微组织、硬度和耐磨损性能。结果表明，经渗氮处理的FeMnCrAl涂层主要由ξ-Fe2 N、ε-Fe3 N和Cr2 N氮化物以及含氮α-Fe组成，其平均硬度高达1788 HV0．3，从而具有良好的耐磨性，磨损失重下降了约63％。
採用激光鎔覆與等離子滲氮相結閤的工藝在45鋼錶麵製備瞭高氮FeMnCrAl塗層。採用掃描電鏡（ SEM）、能譜分析（ EDS）、X射線衍射（ XRD）及硬度試驗等方法研究瞭高氮FeMnCrAl塗層的顯微組織、硬度和耐磨損性能。結果錶明，經滲氮處理的FeMnCrAl塗層主要由ξ-Fe2 N、ε-Fe3 N和Cr2 N氮化物以及含氮α-Fe組成，其平均硬度高達1788 HV0．3，從而具有良好的耐磨性，磨損失重下降瞭約63％。
채용격광용복여등리자삼담상결합적공예재45강표면제비료고담FeMnCrAl도층。채용소묘전경（ SEM）、능보분석（ EDS）、X사선연사（ XRD）급경도시험등방법연구료고담FeMnCrAl도층적현미조직、경도화내마손성능。결과표명，경삼담처리적FeMnCrAl도층주요유ξ-Fe2 N、ε-Fe3 N화Cr2 N담화물이급함담α-Fe조성，기평균경도고체1788 HV0．3，종이구유량호적내마성，마손실중하강료약63％。
The high-nitrogen FeMnCrAl coating was prepared on 45 steel by means of laser cladding followed by plasma nitriding . The microstructure , hardness and wear resistance of the nitrided FeMnCrAl coating were investigated by using SEM , EDS, XRD, hardness test and other methods .The results show that the microstructure of the nitrided FeMnCrAl coating was composed essentially of such nitrides as ξ-Fe2 N,ε-Fe3 N and Cr2 N as well as nitrogen-containing α-Fe phase, and provided with average hardness as high as 1788 HV0.3, consequently offers excellent wear resistance , with its wore mass being reduced by about 63%.
