KR102037653B1 - 스테인레스강 확산 접합 제품의 제조 방법 - Google Patents
스테인레스강 확산 접합 제품의 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 확산 접합을 시험한 적층체 표면상의 초음파 후도계에 의한 두께 측정점의 위치를 도시한 도면.
도 3은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(본 발명예).
도 4는 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 5는 확산 접합 시험에 제공한 적층체의 단면 조직 사진(본 발명예).
도 6은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 7은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(본 발명예).
도 8은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 9는 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 10은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 11은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 12는 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 13은 확산 접합 시험에 제공한 적층체의 단면 조직 사진(비교예).
도 14는 실시예 2에 사용한 피접합재인 각 스테인레스강재의 치수 형상 및 확산 접합 제품의 외형을 모식적으로 도시한 도면.
Claims (6)
- 스테인레스강재끼리를 직접 접촉시켜서 확산 접합에 의해 일체화시킴에 있어서, 접촉시키는 양쪽 스테인레스강재의 적어도 한쪽에 승온 과정에서의 오스테나이트 변태 개시 온도 Ac1점을 650 내지 950℃로 유지하고 오스테나이트+페라이트 2상 온도역을 880℃ 이상의 범위로 유지하는 2상계강을 적용하고, 접촉 면압 0.03㎫ 이상 1.0㎫ 이하, 가열 온도 880 내지 1080℃의 조건 범위에서 상기 2상계강의 페라이트상이 오스테나이트상으로 변태할 때의 입계 이동을 수반하면서 확산 접합을 진행시키는, 스테인레스강 확산 접합 제품의 제조 방법.
- 스테인레스강재끼리를 직접 접촉시켜서 확산 접합에 의해 일체화시킴에 있어서, 접촉시키는 양쪽 스테인레스강재의 적어도 한쪽에 하기 (A)의 화학 조성을 갖고 오스테나이트+페라이트 2상 온도역을 880℃ 이상의 범위로 유지하는 2상계강을 적용하고, 접촉 면압 0.03㎫ 이상 1.0㎫ 이하, 가열 온도 880 내지 1080℃의 조건 범위에서 상기 2상계강의 페라이트상이 오스테나이트상으로 변태할 때의 입계 이동을 수반하면서 확산 접합을 진행시키는, 스테인레스강 확산 접합 제품의 제조 방법.
(A) 질량%로, C:0.0001 내지 0.15%, Si:0.001 내지 1.0%, Mn:0.001 내지 1.0%, Ni:0.05 내지 2.5%, Cr:13.0 내지 18.5%, Cu:0 내지 0.2%, Mo:0 내지 0.5%, Al:0 내지 0.05%, Ti:0 내지 0.2%, Nb:0 내지 0.2%, V:0 내지 0.2%, B:0 내지 0.01%, N:0.005 내지 0.1%, 잔부 Fe 및 불가피적 불순물로 이루어지고, 하기 (1)식으로 표시되는 X값이 650 내지 950이다.
X값=35(Cr+1.72Mo+2.09Si+4.86Nb+8.29V+1.77Ti+21.4Al+40.0B-7.14C-8.0N-3.28Ni-1.89Mn-0.51Cu)+310…(1) - 스테인레스강재끼리를 직접 접촉시켜서 확산 접합에 의해 일체화시킴에 있어서, 접촉시키는 양쪽 스테인레스강재의 한쪽에 하기 (A)의 화학 조성을 갖고 오스테나이트+페라이트 2상 온도역을 880℃ 이상의 범위로 유지하는 2상계강, 다른 쪽에 하기 (B)의 화학 조성을 갖는 스테인레스강을 각각 적용하고, 접촉 면압 0.03㎫ 이상 1.0㎫ 이하, 가열 온도 880 내지 1080℃의 조건 범위에서 상기 2상계강의 페라이트상이 오스테나이트상으로 변태할 때의 입계 이동을 수반하면서 확산 접합을 진행시키는, 스테인레스강 확산 접합 제품의 제조 방법.
(A) 질량%로, C:0.0001 내지 0.15%, Si:0.001 내지 1.0%, Mn:0.001 내지 1.0%, Ni:0.05 내지 2.5%, Cr:13.0 내지 18.5%, Cu:0 내지 0.2%, Mo:0 내지 0.5%, Al:0 내지 0.05%, Ti:0 내지 0.2%, Nb:0 내지 0.2%, V:0 내지 0.2%, B:0 내지 0.01%, N:0.005 내지 0.1%, 잔부 Fe 및 불가피적 불순물로 이루어지고, 하기 (1)식으로 표시되는 X값이 650 내지 950이다.
X값=35(Cr+1.72Mo+2.09Si+4.86Nb+8.29V+1.77Ti+21.4Al+40.0B-7.14C-8.0N-3.28Ni-1.89Mn-0.51Cu)+310…(1)
(B) 질량%로, C:0.0001 내지 0.15%, Si:0.001 내지 4.0%, Mn:0.001 내지 2.5%, P:0.001 내지 0.045%, S:0.0005 내지 0.03%, Ni:6.0 내지 28.0%, Cr:15.0 내지 26.0%, Mo:0 내지 7.0%, Cu:0 내지 3.5%, Nb:0 내지 1.0%, Ti:0 내지 1.0%, Al:0 내지 0.1%, N:0 내지 0.3%, B:0 내지 0.01%, V:0 내지 0.5%, W:0 내지 0.3%, Ca, Mg, Y, REM(희토류 원소)의 합계:0 내지 0.1%, 잔부 Fe 및 불가피적 불순물로 이루어진다. - 스테인레스강재끼리를 직접 접촉시켜서 확산 접합에 의해 일체화시킴에 있어서, 접촉시키는 양쪽 스테인레스강재의 한쪽에 하기 (A)의 화학 조성을 갖고 오스테나이트+페라이트 2상 온도역을 880℃ 이상의 범위로 유지하는 2상계강, 다른 쪽에 하기 (C)의 화학 조성을 갖는 스테인레스강을 각각 적용하고, 접촉 면압 0.03㎫ 이상 1.0㎫ 이하, 가열 온도 880 내지 1080℃의 조건 범위에서 상기 2상계강의 페라이트상이 오스테나이트상으로 변태할 때의 입계 이동을 수반하면서 확산 접합을 진행시키는, 스테인레스강 확산 접합 제품의 제조 방법.
(A) 질량%로, C:0.0001 내지 0.15%, Si:0.001 내지 1.0%, Mn:0.001 내지 1.0%, Ni:0.05 내지 2.5%, Cr:13.0 내지 18.5%, Cu:0 내지 0.2%, Mo:0 내지 0.5%, Al:0 내지 0.05%, Ti:0 내지 0.2%, Nb:0 내지 0.2%, V:0 내지 0.2%, B:0 내지 0.01%, N:0.005 내지 0.1%, 잔부 Fe 및 불가피적 불순물로 이루어지고, 하기 (1)식으로 표시되는 X값이 650 내지 950이다.
X값=35(Cr+1.72Mo+2.09Si+4.86Nb+8.29V+1.77Ti+21.4Al+40.0B-7.14C-8.0N-3.28Ni-1.89Mn-0.51Cu)+310…(1)
(C) 질량%로, C:0.0001 내지 0.15%, Si:0.001 내지 1.2%, Mn:0.001 내지 1.2%, P:0.001 내지 0.04%, S:0.0005 내지 0.03%, Ni:0 내지 0.6%, Cr:11.5 내지 32.0%, Mo:0 내지 2.5%, Cu:0 내지 1.0%, Nb:0 내지 1.0%, Ti:0 내지 1.0%, Al:0 내지 0.2%, N:0 내지 0.025%, B:0 내지 0.01%, V:0 내지 0.5%, W:0 내지 0.3%, Ca, Mg, Y, REM(희토류 원소)의 합계:0 내지 0.1%, 잔부 Fe 및 불가피적 불순물로 이루어진다. - 제 2 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 (A)의 화학 조성을 갖는 2상계강으로서, 하기 (2)식으로 표시되는 γmax가 20 내지 100 미만인 강을 적용하는 스테인레스강 확산 접합 제품의 제조 방법.
γmax=420C-11.5Si+7Mn+23Ni-11.5Cr-12Mo+9Cu-49Ti-50Nb-52Al+470N+189…(2) - 제 2 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 (A)의 화학 조성을 갖는 2상계강으로서, 하기 (2)식으로 표시되는 γmax가 20 내지 100 미만인 강을 적용하고, 접촉 면압 0.03 내지 0.8㎫, 가열 온도 880 내지 1030℃의 조건 범위에서 상기 2상계강의 페라이트상이 오스테나이트상으로 변태할 때의 입계 이동을 수반하면서 확산 접합을 진행시키는 스테인레스강 확산 접합 제품의 제조 방법.
γmax=420C-11.5Si+7Mn+23Ni-11.5Cr-12Mo+9Cu-49Ti-50Nb-52Al+470N+189…(2)
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