Is cóimhiotal nicil-chromóim-mhóilíneach nicil é Inconel atá deartha chun dul i ngleic le raon leathan timpeallachtaí creimneacha, creimeadh agus creimeadh creimneach. Taispeánann an cóimhiotal cruach nicil seo freisin toradh, teanntacht agus airíonna réabtha creep ag teochtaí arda. Úsáidtear an cóimhiotal nicile seo ó theochtaí crióigineacha suas go dtí seirbhís fhadtéarmach ag 1200 ° F. Ceann de na gnéithe idirdhealaitheacha a bhaineann le comhdhéanamh Inconel 718 ná niobium a chur leis chun go gceadófaí go n -éireoidh sé le haois a cheadú agus a cheadaíonn anáil agus táthú gan cruachan spontáineach le linn téamh agus fuaraithe. Feidhmíonn an niobium leis an moluibdín chun maitrís an chóimhiotail a stiffen agus neart ard a sholáthar gan cóireáil teasa a neartú. Tá an cóimhiotal cruach nicil seo déanta go héasca agus is féidir é a tháthú sa riocht cruaite nó deasctha (aois). Úsáidtear an superalloy seo i dtionscail éagsúla ar nós aeraspáis, próiseáil cheimiceach, innealtóireacht mhuirí, trealamh rialaithe truaillithe, agus imoibreoirí núicléacha.
Comhdhéanamh ceimiceach
Inconel Alloy Series |
Item |
600 |
601 |
617 |
625 |
690 |
718 |
X750 |
825 |
C |
≤0.15 |
≤0.1 |
0.05-0.15 |
≤0.1 |
≤0.05 |
≤0.08 |
≤0.08 |
≤0.05 |
Mn |
≤1 |
≤1.5 |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.35 |
≤1 |
≤1 |
Fe |
6-10 |
bal |
≤3 |
≤5 |
7-11 |
bal |
5-9 |
≥22 |
P |
≤0.015 |
≤0.02 |
≤0.015 |
≤0.015 |
N/A |
N/A |
N/A |
N/A |
S |
≤0.015 |
≤0.015 |
≤0.015 |
≤0.015 |
≤0.015 |
≤0.01 |
≤0.01 |
≤0.03 |
Si |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.3 |
≤0.5 |
≤0.5 |
Cu |
≤0.5 |
≤1 |
N/A |
N/A |
≤0.5 |
≤0.3 |
≤0.5 |
1.5-3 |
Ni |
≥72 |
58-63 |
≥44.5 |
Bal |
≥58 |
50-55 |
≥70 |
38-46 |
Co |
N/A |
N/A |
10-15 |
≤1.0 |
N/A |
≤1 |
≤1 |
N/A |
Al |
N/A |
1-1.7 |
0.8-1.5 |
≤0.4 |
N/A |
0.2-0.8 |
0.4-1 |
≤0.2 |
Ti |
N/A |
N/A |
≤0.6 |
≤0.4 |
N/A |
N/A |
2.25- 2.75 |
0.6-1.2 |
Cr |
14-17 |
21-25 |
20-24 |
20-23 |
27-31 |
17-21 |
14-17 |
19.5-23.5 |
Nb+T a |
N/A |
N/A |
N/A |
3.15-4.1 5 |
N/A |
4.75-5.5 |
0.7-1.2 |
N/A |
Mo |
N/A |
N/A |
8-10 |
8-10 |
N/A |
2.8-3.3 |
N/A |
2.5-3.5 |
B |
N/A |
N/A |
≤0.006 |
N/A |
N/A |
N/A |
N/A |
N/A |
· Ceart fisiciúil
Inconel Alloy Series |
Item |
600 |
625 |
718 |
X750 |
Melting Point |
1370-1425ºC |
1290-1350ºC |
1260-1340ºC |
1395-1425ºC |
Density |
8.4g/cm³ |
8.4g/cm³ |
8.24g/cm³ |
8.25g/cm³ |
Alloy State |
Annealing External diameter≥127 |
Annealing External diameter≤127 |
Solid solution |
Solution treatment |
Solution treatment |
Tensile Strength RmN/mm2 |
550 |
550 |
690 |
<965 |
1170 |
Yield Strength Rp0.2N/mm |
205 |
205 |
276 |
550 |
790 |
Extensibility A5% |
35 |
35 |
30 |
30 |
10 |
Brinell Hardness HB |
- |
- |
≤220 |
≤363 |
302-363 |