Evaluation on Powder Metallurgy Process Parameters of Ball-Milled AA8079-B₄C Nanostructured Composites via Taguchi Grey Relational Analysis

Table 4

Grey relational coefficient.

	Grey relation coefficient
Expt. no.	Microhardness	Compressive strength	Grey relational grade	Rank
1	0.456012	0.419108	0.43756	22
2	0.478377	0.468436	0.473406	19
3	0.35818	0.514776	0.436478	21
4	0.49589	0.453804	0.474847	18
5	0.508608	0.598796	0.553702	8
6	0.6772	0.53101	0.604105	6
7	0.519803	0.333333	0.426568	23
8	0.340511	0.686853	0.513682	15
9	0.333333	0.702729	0.518031	14
10	0.441323	0.342942	0.392133	24
11	0.647282	0.35297	0.500126	16
12	0.426079	0.624299	0.525189	13
13	0.359471	0.360646	0.360059	27
14	0.39112	0.56754	0.47933	17
15	0.547138	0.669214	0.608176	5
16	0.365213	0.374765	0.369989	26
17	0.52845	0.523059	0.525755	12
18	0.408385	0.588072	0.498229	16
19	0.611031	0.507143	0.559087	7
20	0.382329	0.391662	0.386996	25
21	0.660746	0.401823	0.531284	10
22	0.481069	0.579663	0.530366	11
23	1	0.6106	0.8053	1
24	0.586855	0.699287	0.643071	4
25	0.523747	0.558276	0.541011	9
26	0.778549	0.831161	0.804855	2
27	0.576395	1	0.788198	3